Stat 200 Exam 2

Top of Form Points Awarded| 34. 00| Points Missed| 6. 00| Percentage| 85. 0%| 1. The roll of symptomification associated behind a suitableness a symptomification flag is the likelihood A) of castawaying a penny inoperative fancy. B) of not castawaying a penny inoperative fancy. C) that the inoperative fancy is penny. D) that the choice fancy is penny. Feedback: This roll of symptomification, frequently set to ? correspondent to 0. 05, is used to set the peel as the acme likelihood a learninger would use in apobject to castafar a penny inoperative fancy. Points Earned:| 1. 0/1. 0| | Rectify Answer(s):| A| 2. A inoperative fancy is that the middle pulse objurgate of adults is 70. For a pattern of 64 adults, the middle pulse objurgate is 71. 8. A symptomification flag is consequenceed and the p-treasure is 0. 02. What is the most misspend blank domiciled on ? of 0. 05? A) Conclude that the population middle pulse objurgate is 70. B) Conclude that the population middle pulse objurgate is 71. 8. C) Reject the fancy that the population middle pulse objurgate is 70. D) Reject the fancy that the pattern middle pulse objurgate is 70. Feedback: Since the p-treasure is short than ? we would castafar the Ho the inoperative fancy that the population middle pulse objurgate is 70. Points Earned:| 1. 0/1. 0| | Rectify Answer(s):| C| 3. If the end of a fancy flag for a objurgate is statistically expressive, then A) the inoperative fancy is castawayed. B) the choice fancy is castawayed. C) the population objurgate must correspondent the inoperative treasure. Feedback: When a fancy flag is statistically expressive then we castafar Ho the inoperative fancy Points Earned:| 1. 0/1. 0| | Rectify Answer(s):| A| 4. Which of the forthhereafter blanks is not equiponderant to castawaying the inoperative fancy? A) The ends are statistically expressive. B) The ends are not statistically expressive. C) The choice fancy is original. D) The p-treasure < ? (the symptomification roll) Feedback: All are equiponderant blanks for castawaying Ho bar when ends are not statistically expressive (i. e. we do not castafar Ho) Points Earned:| 1. 0/1. 0| | Rectify Answer(s):| B| 5. Determine if the declaration is a ordinary inoperative fancy (Ho) or choice fancy (Ha). There is no separation betwixt the objurgate of overheaviness men and overheaviness women in America. A) Null fancy B) Alternative fancy Feedback: Ho refers to no separation or modify or correspondent to. Ha earn be the learning fancy that involves either a separation, superior than, or short than. Points Earned:| 1. 0/1. 0| | Rectify Answer(s):| A| 6. A insurance administrator wants to verify that ? = the middle expedite of cars driven by a develop is short than 25 mph. Suppose that a pointclose pattern of 14 cars shows an middle expedite of 24. 0 mph, behind a suitableness a pattern flag solution of 2. 2 mph. Suppose that the expedites of cars are normally select. What are the misspend inoperative and choice hypotheses? A) Ho: ? = 25 and Ha: ? < 25 B) Ho: ? = 25 and Ha: ? > 25 C) Ho: ? = 25 and Ha: ? ? 25 D) Ho: ? ? 25 and Ha: ? = 25 E) Ho: x-bar = 24 and Ha: x-bar < 24 F) Ho: x-bar = 24 and Ha: x-bar > 24 G) Ho: x-bar = 24 and Ha: x-bar ? 24 H) Ho: x-bar ? 24 and Ha: x-bar = 24 Feedback: The word less is the key engagement in determining the rectify Ha indication. Exceeds implies that the investigator is singly ardent in whether the penny population medium is less than 25. The treasure of 24 is the sample mean. Points Earned:| 1. 0/1. 0| | Rectify Answer(s):| A| 7. An ESP illustration is consequenceed in which a participant divinees which of 4 cards the learninger has pointlessly choice, where each card is correspondently mitigated. This is repeated for 200 trials. The inoperative fancy is that the interrogation is divineing, suitableness the choice is that the interrogation has ESP and can divine at remarkable than the wild objurgate. The interrogation in-consequence gets 70 rectify retorts out of the 200 trials. Which of the forthhereafter describes the likelihood dramatizeed by the p-treasure for this flag? A) The likelihood that the interrogation has ESP B) The likelihood that the interrogation is regular divineing. C) The likelihood of 70 or further rectify divinees if the interrogation has ESP. D) The likelihood of 70 or further rectify divinees if the interrogation is divineing at the wild objurgate. Feedback: The inoperative fancy would be that the interrogation is divineing, i. . Ho: ? = 1/4. Then the p-treasure is the likelihood that if the interrogation were divineing that they would get 70 or further direct Points Earned:| 1. 0/1. 0| | Rectify Answer(s):| D| 8. Suppose the symptomification roll for a fancy flag is ? = 0. 05. If the p-treasure is 0. 049, the firmness is to A) castafar the inoperative fancy. B) accept the inoperative fancy. C) not castafar the inoperative fancy. Feedback: With p-treasure <e; ? our firmness is to castafar the inoperative fancy Ho Points Earned:| 1. 0/1. 0| | Rectify Answer(s):| A| 9. Which declaration is penny environing x-bar and ? -hat? A) They are twain parameters. B) They are twain statistics. C) x-bar is a parameter and ? -hat is a statistic. D) ? -hat is a parameter and x-bar is a statistic. Feedback: Both x-bar and ? -hat dramatize statistics. Points Earned:| 0. 0/1. 0| | Rectify Answer(s):| B| 10. Which of the forthhereafter declarations is rectify environing a parameter and a statistic associated behind a suitableness repeated pointclose patterns of the identical extent from the identical population? A) Values of a parameter earn dissimilate from pattern to pattern but treasures of a statistic earn not. B) Values of twain a parameter and a statistic may dissimilate from pattern to pattern. C) Values of a parameter earn dissimilate according to the sampling classification for that parameter. D) Values of a statistic earn dissimilate according to the sampling classification for that statistic. Feedback: The population parameter does not dissimilate, ultimately, the treasures of the statistic earn dissimilate domiciled on the sampling classification of that statistic Points Earned:| 1. 0/1. 0| | Rectify Answer(s):| D| 11. For a pointclose pattern of 10 men, the medium division enclosure is x = 57. 3 cm and the pattern flag solution is s = 2 cm. The flag hallucination of the pattern medium is A) 0. 200 B) 0. 447 C) 0. 500 D) 0. 632 Feedback: The flag hallucination correspondents S/Sq. Rt. of N = 2/3. 16 = 0. 632 Points Earned:| 1. 0/1. 0| | Correct Answer(s):| D| 12. Suppose that a 95% dependence gap for the objurgate of original-year wards at a develop who played in intramural sports is 35% plus or minus 5%. The brink of hallucination for the dependence gap is A) 5% B) 35% C) 95% Feedback: "plus or minus" designates the brink of hallucination which is 5% Points Earned:| 1. 0/1. 0| | Rectify Answer(s):| A| 13. In a departed General Social Survey, a pointclose pattern of men and women retorted the interrogation "Are you a limb of any sports bunchs? " Domiciled on the pattern facts, 95% dependence gaps for the population objurgate who would retort yes are 0. 3 to 0. 19 for women and 0. 25 to 0. 33 for men. Domiciled on these ends, you can reasonably argue that A) at last 25% of American men and American women appertain to sports clubs. B) there is no developed token of a gender separation in the objurgates of men and women who appertain to sports clubs. C) there is developed token of a gender separation in objurgates of American men and American women who appertain to sports clubs. Feedback: Since the two dependence gaps do not overlap there is developed token that a separation in the objurgates exists Points Earned:| 1. 0/1. 0| | Correct Answer(s):| C| 14. In a departed General Social Survey, 87% of a pointclose pattern of n = 990 tallyents retorted yes to the interrogation "Would you apverify of an adult virile punching a foreigner if the foreigner had reclaimed into the man's progeny? " A 90% dependence gap for the objurgate of all Americans who apverify of punching an stranger is A) 0. 852 to 0. 888 B) 0. 849 to 0. 891 C) 0. 845 to 0. 895 D) 0. 842 to 0. 898 Feedback: A dependence gap is base by pattern statistic ± Zmultiplier*StandardError. Behind a suitableness p-hat of 0. 87, Zmultiplier of 1. 65 and n = 990, the 90% dependence gap is 0. 49 to 0. 891 Points Earned:| 0. 0/1. 0| | Rectify Answer(s):| A| 15. A pointlessly chosen pattern of n =51 men in Brazil had an middle lifep of 59 years. The flag solution was 10 years and the flag hallucination was 1. 400. Calculate a 98% dependence gap for the middle lifep for all men in Brazil. A) (55. 6, 62. 4) B) (56. 2, 61. 8) C) (35. 0, 83. 0) Feedback: Using degrees of insubservience correspondent to 51 - 1 gives a t* of 2. 40 for dependence roll of 98%. The flag hallucination is correspondent to s/vn = 10/v51 = 1. 400 [given! ]. The gap then is 59 ± 2. 40*1. 400 = (55. 6, 62. 4) Points Earned:| 1. /1. 0| | Rectify Answer(s):| A| 16. In a pointclose pattern of 1000 wards, 80% were in gift of longer hours at the develop library. The flag hallucination of ? -hat is approximately: A) 0. 013 B) 0. 160 C) 0. 640. D) 0. 800 Feedback: The flag hallucination is base by presentation the balance source of [(0. 80)(0. 20)/1000] = 0. 013 Points Earned:| 1. 0/1. 0| | Rectify Answer(s):| A| 17. A learninger wants to assess if there is a separation in the middle age of onslaught of a definitive disorder for men and women who get the disorder. Let ? 1 = middle age of onslaught for women and ? 2 = middle age of onslaught for men. A pointclose pattern of 30 women behind a suitableness the disorder showed an middle age of onslaught of 83 years, behind a suitableness a pattern flag solution of 11. 5 years. A pointclose pattern of 20 men behind a suitableness the disorder showed an middle age of onslaught of 77 years, behind a suitableness a pattern flag solution of 4. 5 years. Suppose that ages at onslaught of this disorder are normally select for each gender, do not suppose the population discrepancys are correspondent. What are the misspend inoperative and choice hypotheses? A) ? 1 = ? 2 and Ha: ? 1 ? ?2 B) ? 1 ? ?2 and Ha: ? 1 = ? 2 C) ? 1 = ? 2 and Ha: ? 1 < ? 2 D) ? 1 = ? 2 and Ha: ? 1 > ? 2 Feedback: Since the learninger is ardent in detecting singly a difference this would involve that any separation earn do, thus the Ha is ? Points Earned:| 1. 0/1. 0| | Rectify Answer(s):| A| 18. It is disclosed that for direct-handed herd, the dominant (right) laborer tends to be stronger. For left-handed herd who feed in a earth intended for direct-handed herd, the identical may not be penny. To flag this, muscle power was measured on the direct and left laborers of a pointclose pattern of 15 left-handed men and the separation (left - direct) was base. The choice fancy is one-sided (left laborer stronger). The ending t-statistic was 1. 90. This is an specimen of A) a two-pattern t-test. B) a coupleed t-test. C) a pooled t-test. D) an unpooled t-test. Feedback: Since two measurements were fascinated per singular (i. e. for each man patternd muscle power was measured on his direct laborer then his left laborer) this would be a examine using coupleed facts. Points Earned:| 1. 0/1. 0| | Rectify Answer(s):| B| 19. It is disclosed that for direct-handed herd, the dominant (right) laborer tends to be stronger. For left-handed herd who feed in a earth intended for direct-handed herd, the identical may not be penny. To flag this, muscle power was measured on the direct and left laborers of a pointclose pattern of 15 left-handed men and the separation (left - direct) was base. The choice fancy is one-sided (left laborer stronger). The ending t-statistic was 1. 90. Assuming the provisions are met, domiciled on the t-statistic of 1. 90 the misspend firmness for this flag using ? = 0. 05 and using T-Table is: A) df = 14, so p-treasure < 0. 05 and the inoperative fancy can be castawayed. B) df = 14, so p-treasure > 0. 05 and the inoperative fancy cannot be castawayed. C) df = 28, so p-treasure < 0. 05 and the inoperative fancy can be castawayed. D) df = 28, so p-treasure > 0. 05 and the inoperative fancy cannot be castawayed. Feedback: From T-Table and degrees of insubservience correspondent to 15 ? 1 = 14 and a t-statistic of 1. 90, the p-treasure is betwixt 0. 025 and 0. 050 which is short than 0. 05 making the misspend firmness to castafar Ho. Points Earned:| 1. 0/1. 0| | Rectify Answer(s):| A| 20. A shoe fraternity wants to collate two materials, A and B, for use on the uncombineds of boys' shoes. In this specimen, each of ten boys in a examine wore a peculiar couple of shoes behind a suitableness the uncombined of one shoe made from Material A and the uncombined on the other shoe made from Material B. The uncombined types were pointlessly assigned to representation for inmutable separations in waste betwixt the left and direct base. Behind three months, the shoes are measured for waste. Let Ho: ? d = 0 versus Ha: ? d ? 0. From this pointclose pattern of 10 boys, the pattern medium separation was 0. 41 and Sd was 0. 387. If the p-treasure for this flag is 0. 009, then for a symptomification roll of alpha = 0. 05, are the ends statistically expressive? A) No, ends are not statistically expressive owing the p-treasure < 0. 05. B) Yes, ends are statistically expressive owing the p-treasure < 0. 05. C) No, ends are not statistically expressive owing the p-treasure > 0. 05  D) Yes, ends are statistically expressive owing the p-treasure > 0. 05. Feedback: Yes, ends are statistically expressive owing the p-treasure < 0. 05. Points Earned:| 1. 0/1. 0| | Rectify Answer(s):| B| 21. The acme separation at which a violentway symptom can be peruse is resolute for a pattern of adolescent herd and a pattern of older herd. The medium separation is computed for each age bunch. What is the most misspend null fancy environing the mediums of the two bunchs? A) The population mediums are unanalogous. B) The pattern mediums are unanalogous. C) The population mediums are the identical. D) The pattern mediums are the identical. Feedback: The inoperative fancy, Ho, would designate that there is no separation and that this would follow settle in the population. The pattern is used to flag for a population separation. Points Earned:| 1. 0/1. 0| | Rectify Answer(s):| C| 22. The p-treasure for a one-sided flag for a medium was 0. 04. The p-treasure for the selfsimilar two-sided flag would be: A) 0. 02 B) 0. 04 C) 0. 06 D) 0. 08 Feedback: When we go from a 1-sided flag of hypotheses to a 2-sided flag we would inclose the p-value. Conversely, going from a 2-sided to a 1-sided we would cut the p-treasure in half. Points Earned:| 1. 0/1. 0| | Rectify Answer(s):| D| 23. A shopper wanted to flag whether there was a separation in the middle protraction eras at the obstruct-out confrontd unordered 5 unanalogous supermarkets. She chosen a pointclose pattern of 20 shoppers from each of the five supermarkets. What is the choice fancy for this position? A) The middle protraction era to obstruct out is 25 minutes for all five supermarkets. B) The middle protraction era to obstruct out is the identical for all five supermarkets. C) The middle protraction era for each of the 100 shoppers is unanalogous. D) The middle protraction era to obstruct out is not the identical for all five supermarkets. Feedback: The choice fancy for an ANOVA flag is that all the mediums are not the identical, i. e. the mediums are not all correspondent. Points Earned:| 1. 0/1. 0| | Rectify Answer(s):| D| 24. Which one of the forthhereafter choices describes a completion for which an separation of discrepancy would be misspend? A) Comparing the objurgate of successes for three unanalogous matters of apprehension. Each matter is finished on 100 patients. B) Analyzing the interdependence betwixt violent develop GPA and propaganda GPA. C) Comparing the medium rise heavinesss of newborn babies for three unanalogous racial bunchs. D) Analyzing the interdependence betwixt gender and conviction environing cardinal fare (gift or confront). Feedback: The referring-to (response) mutable demands to be natural and the unanalogous rolls of the inreferring-to mutable demand to be mutually unpopular and distinct. This leads to the rectify retort of medium rise heavinesss (natural tally) athwart three racial bunchs (mutually unpopular, distinct). Points Earned:| 0. /1. 0| | Rectify Answer(s):| C| 25. A examine collated pace object middles (GPA) for wards in a class: wards were separated by 6 locations where they usually sat during exhortation (i. e. left or direct face, left or direct disposition, left or direct contradiction). A completion pattern extent of 12 wards was premeditated (2 wards from each minority) using one-way separation of discrepancy. What are the numerator and denominator degrees of insubservience for the ANOVA F-test? A) 6 for numerator and 12 for denominator. B) 5 for numerator and 11 for denominator. C) 5 for numerator and 6 for denominator. Feedback: The numerator degrees of insubservience are base by presentation the sum of bunch rolls minus 1 (this event 6 ? 1 = 5) and the denominator degrees of insubservience are base by presentation the completion pattern extent minus the sum of bunch rolls (12 ? 6 = 6) Points Earned:| 0. 0/1. 0| | Rectify Answer(s):| C| 26. A examine collated flagosterone rolls unordered athletes in foul-mouthed sports: soccer, footprint, Lacrosse, and steep polo. The completion pattern extent was n =30 (10 soccer, 10 footprint, 5 Lacrosse, and 5 steep polo). A one-way separation of discrepancy was used to collate the population medium rolls for the foul-mouthed sports. The sum of balanced hallucinations is SS Hallucination = 100. What is the treasure of the Medium Balance Hallucination (MS Error)? A) 10 B) 3. 45 C) 3. 85 Feedback: The MS Hallucination is correspondent to the SS Hallucination separated by the Hallucination degrees of insubservience (which are correspondent to the completion pattern extent minus the sum of bunch rolls: 30 ? 4 = 26). Therefore, the retort is 100/26 = 3. 85 Points Earned:| 1. 0/1. 0| | Rectify Answer(s):| C| 27. On a view conducted at a university, wards were asked how they felt environing their heaviness (environing direct, overweight, or subordinateneathweight), and so were asked to annals their pace object middle (GPA). There were 235 tallys, behind a suitableness 160 maxim their heaviness was environing direct, 50 said they were overweight, and 17 subordinateneathweight. The interrogation of profit is whether medium GPA is the identical or differs for unanalogous heaviness lie populations. The flag F-statistic treasure is 4. 98. The p-treasure of 0. 008 is base by calculating: A) the area to the direct of 4. 98 subordinateneathneath an F-classification behind a suitableness 2 and 232 degrees of insubservience. B) the area to the direct of 4. 98 subordinateneathneath an F-classification behind a suitableness 2 and 234 degrees of insubservience. C) the area to the direct of 4. 98 subordinateneathneath an F-classification behind a suitableness 2 and 231 degrees of insubservience. Feedback: The p-treasure is the likelihood of substance superior than the F-statistic or sinvolve the area to the direct of the F-statistic behind a suitableness the selfsimilar degrees of insubservience for the bunch (sum of bunch rolls minus 1, or 3 ? 1 = 2) and hallucination (completion pattern extent minus the sum of bunch rolls, or 235 ? 3 = 232) Points Earned:| 1. 0/1. 0| | Rectify Answer(s):| A| 28. Ninety herd behind a suitableness violent cholesterol are pointlessly separated into three bunchs of thirty, and a unanalogous matter program for decreasing cholesterol is assigned to each bunch. The tally mutable is the modify in cholesterol roll behind two months of matter. An separation of discrepancy earn be used to collate the three matters. What inoperative fancy is flprimeval by this ANOVA F-test? A) The pattern discrepancys are correspondent for the three matter bunchs. B) The population discrepancys are correspondent for the three matters. C) The pattern mediums are correspondent for the three matter bunchs. D) The population mediums are correspondent for the three matters Feedback: The inoperative fancy for an ANOVA flag is that all population mediums are correspondent. Points Earned:| 0. 0/1. 0| | Rectify Answer(s):| D| 29. A examine consequenceed by the Disposition for Academic Integrity at Rutgers University viewed 2116 wards at 21 propagandas and universities. Some of the develops had an "respect decree" and others did not. Of the wards at develops behind a suitableness an respect decree, 7% reported having plagiarized a Nursing essay via the Internet, suitableness at develops behind a suitableness no respect decree, 13% did so. (Sacramento Bee, Feb 29, 2000, D1. ) For this examine, which of the forthhereafter declarations environing percent extension in abandon is rectify? A) There is a 185. 7% extension in the abandon of plagiarism at a develop behind a suitableness no respect decree, collated to a develop behind a suitableness an respect decree. B) There is an 85. % extension in the abandon of plagiarism at a develop behind a suitableness no respect decree, collated to a develop behind a suitableness an respect decree. C) There is a 53. 8% extension in the abandon of plagiarism at a develop behind a suitableness no respect decree, collated to a develop behind a suitableness an respect decree. D) There is a 6% extension in the abandon of plagiarism at a develop behind a suitableness no respect decree, collated to a develop behind a suitableness an respect decree. Feedback: The percentage extension is base by presentation the separation in abandons betwixt one bunch minus the baselength and then dividing this separation by the baselength abandon. Here the retort that makes conviction is one using the "behind a suitableness respect" as the baseline. Doing so produces: (13%-7%)/7% = 85. 7% extension in plagiarism from "behind a suitableness respect" to "without respect". Points Earned:| 1. 0/1. 0| | Rectify Answer(s):| B| 30. Which of the forthhereafter mutables COULD be used in a Chi-Square separation? A) Gender B) Political Party Affiliation C) Race D) Age E) Course Minority Sum F) All of the aloft Feedback: All are potential as you could categorize age. Points Earned:| 1. 0/1. 0| | Rectify Answer(s):| F| 31. A view looked at the convictions of 321 tallyents from the General Social View by whether they owned a gun (or not) and whether they gifted (or confrontd) a law requiring a sanction to own a gun. What is the rectify null fancy for this view? A) There is no relationship in the population betwixt gun holding and conviction concerning gun law sanction  B) There is no relationship in the pattern betwixt gun holding and conviction concerning gun law sanction  C) There is a interdependence in the population betwixt gun holding and conviction concerning gun law sanction  D) There is a interdependence in the pattern betwixt gun holding and conviction concerning gun law sanction Feedback: There is no relationship in the population betwixt gun holding and conviction concerning gun law sanction Points Earned:| 1. /1. 0| | Rectify Answer(s):| A| 32. Domiciled on the National Household View on Drug Abuse, the percentage of 17-year olds who incessantly finished cigarette smoking is 56. 2%. The referring-to abandon of incessantly smoking for a 17-year old versus a 12-year old is 3. 6. What is the abandon of smoking for a 12-year-old (i. e. what was the percentage of 12-year olds who incessantly finished smoking)? A) 14. 1% B) 15. 6% C) 50. 0% D) 56. 2% Feedback: You demand to use algebra to solve: Referring-to abandon (3. 6) = one bunch of profit (17 year olds who finished smoking = 56. %) separated by another bunch of profit (12 year olds who finished smoking and is obscure). Solving for the undisclosed comes to (3. 6)*(0. 562) = 0. 156 or 15. 6% Points Earned:| 1. 0/1. 0| | Rectify Answer(s):| B| 33. A view examined the convictions of 321 tallyents from the General Social View by whether they owned a gun (or not) and whether they gifted (or confrontd) a law requiring a sanction to own a gun. What is the rectify alternative fancy for this view? A) There is no relationship in the population betwixt gun holding and conviction concerning gun law sanction  B) There is no relationship in the pattern betwixt gun holding and conviction concerning gun law sanction  C) There is a interdependence in the population betwixt gun holding and conviction concerning gun law sanction  D) There is a interdependence in the pattern betwixt gun holding and conviction concerning gun law sanction Feedback: There is a interdependence in the population betwixt gun holding and conviction concerning gun law sanction Points Earned:| 1. 0/1. 0| | Correct Answer(s):| C| 34. A view examined the convictions of 1447 tallyents in the General Social View to the interrogation "Do you gift or conface the expiration pain for living-souls convicted of butcher? " The point of examining the facts is to see if there is a gender separation in how herd would tally to this interrogation. State the null hypotheses for this examine. A) There is no relationship in the population betwixt gender and conviction on the expiration pain. B) There is no relationship in the pattern betwixt gender and conviction on the expiration pain. C) There is a interdependence in the population betwixt gender and conviction on the expiration pain. D) There is a interdependence in the pattern betwixt gender and conviction on the expiration pain. Feedback: The inoperative fancy speaks of no interdependence betwixt the mutables in the population. Points Earned:| 1. 0/1. 0| | Rectify Answer(s):| A| 35. A return was consequenceed for 20 cities behind a suitableness edge as the explanatory mutable (x) and middle January air as the tally mutable (y). The edge is measured in degrees and middle January air in degrees Fahrenheit. The edges orderd from 26 (Miami) to 47 (Duluth) The return equation is * y = 49. 4 - 0. 313x The city of Miami, Florida has edge 26 degrees behind a suitableness middle January air of 67 degrees Fahrenheit. 1. What is the estimated middle January air for Miami, and 2. domiciled on the return equation, what is the residual? A) Estimated January air is 36. 88 and the residual is - 11. 88  B) Estimated January air is 36. 88 and the residual is 11. 88  C) Estimated January air is 41. 3 and the residual is - 25.   D) Estimated January air is 41. 3 and the residual is 25. 7 Feedback: The estimated January air is 41. 3 degrees Fahrenheit. The residual is 25. 7 degrees (residual = observed minus predicted) Points Earned:| 0. 0/1. 0| | Rectify Answer(s):| D| 36. Which of the forthhereafter interdependences designates a stronger direct interdependence betwixt two mutables? A) - 0. 90 B) 0. 75 C) 0. 50 D) 1. 25 Feedback: The rectify retort is -0. 90. Recall that the value of the interdependence designates the power and this treasure cannot be short than - 1 nor superior than + 1 (thus reigning out 1. 5 as an retort). The privative symptom regular designates the control of the interdependence (definitive or privative) and has no position on the power of the interdependence. Points Earned:| 1. 0/1. 0| | Rectify Answer(s):| A| 37. What is the consequence of an outlier on the treasure of a interdependence coefficient? A) An outlier earn constantly curtail a interdependence coefficient. B) An outlier earn constantly extension a interdependence coefficient. C) An outlier government either curtail or extension a interdependence coefficient, depending on where it is in homogeneity to the other objects. D) An outlier earn bear no consequence on a interdependence coefficient. Feedback: See the exhortation notes! Points Earned:| 1. 0/1. 0| | Rectify Answer(s):| C| 38. A bunch of adults primeval 20 to 80 were flprimeval to see how far afar they could original hearkenken an ambulance hereafter towards them. An equation describing the interdependence betwixt separation (in feet) and age was base to be: * Separation = 600 - 3 ? Age Domiciled on the equation, what is the control of the fraternity betwixt separation and age? A) Positive B) Negative C) Zero D) Direction can’t be resolute from the equation. Feedback: The control of an fraternity can be regular by because the symptom of the climb. Since the climb is privative then so is the fraternity. Points Earned:| 1. 0/1. 0| | Rectify Answer(s):| B| 39. Departed facts has shown that the return length of the developed exam mandible and the midengagement exam mandible for wards who follow statistics from a definitive bigot is * developed exam = 50 + 0. 5 ? midengagement For a ward behind a suitableness a midengagement mandible of 50, the predicted developed exam mandible is: A) 50. B) 50. 5. C) 75. D) 100. Points Earned:| 1. 0/1. 0| | Rectify Answer(s):| C| 40. Which of the forthhereafter is a potential treasures of R2 indicates the strongest direct interdependence betwixt two innate mutables? A) -90% B) 0% C) 80% D) 120% Feedback: Relimb that the order of R2 is from 0 to 100%. Thus 80% would designate the strongest direct interdependence, i. e. interdependence, domiciled on the balance source of 0. 8 is superior than the balance source or 0. Points Earned:| 1. 0/1. 0| | Rectify Answer(s):| C| Bottom of Form