Harvard university. qmb final exam final assessment test i


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Final Assessment Criterion I 

Question 1: The median is frequently a emend delegated-to-others of the mediate reprove of a grounds set when the grounds set:  

Is bimodal. Has a noble example discontinuance. Is noblely skewed. Has no outliers. 

Question 2: The grounds in the Excel spreadsheet linked underneath stipulate instruction on the alimentational gratified (in grams per serving) of some accidental breakfast cereals. For which nutrients is the moderation nutrient gratified per serving important than the median nutrient gratified per serving? Breakfast Cereals Source Proteins solely.Complex carbohydrates solely.Both nutrients. Neither nutrient. 

Question 3:The histogram underneath devises the carbon monoxide (CO) emissions (in pulverizes/minute) of 40 contrariant airplane examples at receive-off. 

The arrangement is best illustrative as is: Uniform. Heteroskedastic. Normal. Skewed equitable. 

Question 4:The histogram underneath devises the carbon monoxide (CO) emissions (in pulverizes/minute) of 40 contrariant airplane examples at receive-off. Which of the forthcoming narratements is the best consequence that can be enticen from this histogram? The moderation unimpaired of carbon monoxide emissions is important than the median unimpaired of carbon monoxide emissions. The moderation unimpaired of carbon monoxide emissions is short than the median unimpaired of carbon monoxide emissions. The moderation and median unimpaireds of carbon monoxide emissions are environing similar. The referring-to dimensions of the moderation and median unimpaireds of carbon monoxide emissions cannot be deduced from the histogram. 

Question 5:In the grounds set semblancen underneath, the apsituation coefficient of the two fickles is: 

Correlation Grounds Source -1.0. -0.5 0.0 None of the overhead. 

Question 6:The grounds in the Excel spreadsheet linked underneath bestow the ages and salaries of the chief patronageer officers of 59 companies after a while sales incompact $5 kindnessite and $350 kindnessite. The apsituation incompact age and allowance can be characterized as: CEO Salaries Strong and settled. Strong and denying. Weak and settled. Weak and denying. 

Question 7:For a bestown set of grounds, the example discontinuance measures: The separation incompact the moderation and the grounds material-matter imlimited from the moderation. The separation incompact the moderation and the grounds material-matter undeviating to the moderation. The separation incompact the moderation and the median. None of the overhead. 

Question 8:The grounds in the Excel spreadsheet linked underneath bestow the medium reexample reproves of impure currencies to the US dollar during October 2002. Over this end, which vogue was most spirituous referring-to to the US dollar, as measured by the coefficient of fluctuate? Reexample Rates Source The Brazilian Real. The Euro. The Japanese Yen. The South Korean Won. 

Question 9:A raceal concern lodgment intends to overlook its subscribers to narreprove who they consider is the "CEO of the Century." Subscribers are invited to exhaustive an onsequence overlook. Established solely on this instruction, which of the forthcoming can be deduced environing the overlook results? They procure be particular owing the lodgment's subscribers are unconditioned to narreprove who the CEO of the epoch is. They procure correspondently animadvert the conviction of the race as a unimpaired environing who the CEO of the epoch is.They procure be unjaundiced owing the respondents procure be self-selected. They procure be particular owing subscribers who keep bearing to the onsequence overlook are not delegated-to-others of the population of subscribers as a unimpaired. 

Question 10: A collective consultant passs a overlook to narreprove what situation the mayoral solicitor she works for should receive on a incomplete smoking ban in restaurants. Which of the forthcoming overlook questions procure consign an unjaundiced defense? Should the city ban smoking in restaurants to cover our misrecord from assist-hand fume? Should tobacco fume, a open purpose of lung cancer, be banned from open spaces such as restaurants? Does the city keep the equiboard to limit recreational activities, such as limited curtail of alcohol or tobacco, on the antecedent of privately-owned concernes? None of the overhead. 

Question 11:In a recently administered IQ criterion, the scores were distributed normally, after a while moderation 100 and example discontinuance 15. What dispensation of the criterion receivers scored incompact 70 and 130? Environing 68%. Environing 84%. Environing 95%. Environing 99.5%. 

Question 12:Which of the forthcoming is not penny environing the Normal Distribution? It is symmetric.Its moderation and median are similar.It is exhaustively illustrative by its moderation and its example discontinuance. It is bimodal. 

Question 13: The histogram underneath semblances the underlying arrangement illustration of the results of a rolled die. Suppose the die is rolled 50 times and the results are mediumd. Suppose this system — rolling 50 dice and averaging their results — is frequent 100 times. 

Which of the forthcoming best describes the arrangement of these 100 mediums? Skewed equitable. Skewed left. Normal. Uniform. 

Question 14:A alimentation inquiryer wants to narreprove the moderation fat gratified of hen's eggs. She collects a illustration of 40 eggs. She calculates a moderation fat gratified of 23 grams, after a while a illustration example discontinuance of 8 grams. From these statistics she calculates a 90% dependence season of [20.9 grams, 25.1 grams]. What can the inquiryer do to curtail the width of the dependence season? Extension the dependence flatten. Curtail the dependence flatten. Curtail the illustration dimension None of the overhead. 

Question 15:In a wild illustration of 321 superior citizens, 61 were establish to own a residence computer. Established on this illustration, the 95% dependence season for the dispensation of computer-owners incompact superior citizens is:  [2.6%; 7.4%]. [13.4%; 24.6%]. [14.7%; 23.3%].The acceptance cannot be narrated from the instruction bestown. 

Question 16: Preliminary estimates propose that environing 58% of students at a narreprove university kindness implementing an reputation command. To earn a 95% dependence season for the dispensation of all students at the university kindnessing the reputation command, what is the narrowness illustration dimension needed if the whole width of the dependence season must be short than 5 percentage material-matters (i.e., the dependence season should augment at most 2.5 percentage material-matters overhead and underneath the illustration dispensation)? 375. 264. 1,498. The acceptance cannot be narrated from the instruction bestown. 

Question 17. In a overlook of twelve Harbor Concern School graduates, the moderation starting allowance was $93,000, after a while a example discontinuance of $17,000. The 95% dependence season for the medium starting allowance incompact all Harbor graduates is:  [$83,382; $102,618]. [$82,727; $103,327]. [$82,199; $103,801]. [$59,000; $127,000]. 

Question 18: In a overlook of 53 wildly selected patrons of a shopping mall, the moderation unimpaired of vogue carried is $42, after a while a example discontinuance of $78. What is the 95% dependence season for the moderation unimpaired of vogue carried by mall patrons? [$39.1; $44.9]. [$24.4; $59.6]. [$21.0; $63.0]. [$14.4; $69.6]. 

Question 19: A supply muniment in a brewery is calculated to replenish bottles after a while 355 ml of forced cider. In custom, notwithstanding, bodys disagree subordinately from bottle to bottle. In a illustration of 49 bottles, the moderation body of cider is establish to be 354 ml, after a while a example discontinuance of 3.5 ml. 

At a sentiment flatten of 0.01, which misrecord can the brewer entice? The penny moderation body of all bottles replenished is 354 ml. The muniment is not supply bottles to an medium body of 355 ml. Tshort is not ample proofimony to manifest that the muniment is not supply bottles to an medium body of 355 ml. The muniment is supply bottles to an medium body of 355 ml. 

Question 20: To pass a one-sided conjecture criterion of the assertion that offsprings located on nook lots (corner-lot offsprings) keep nobleer medium selling charges than those located on non-nook lots, the forthcoming opinion conjecture should be used: Offspring Prices Grounds Source The medium selling charge of a nook-lot offspring is nobleer than it is commsolely believed to be. The medium selling charge of a nook-lot offspring is nobleer than the medium selling charge of all offsprings. The medium selling charge of a nook-lot offspring is the selfselfsame as the medium selling charge of a offspring not located on a nook lot. The medium selling charge of a nook-lot offspring is nobleer than the medium selling charge of a offspring not located on a nook lot. 

Question 21: The grounds in the Excel spreadsheet linked underneath manifest the selling charges of offsprings located on nook lots ("corner-lot offsprings") and of offsprings not located on nook lots. Pass a one-sided conjecture criterion of the assertion that nook-lot offsprings keep nobleer medium selling charges than those located on non-nook lots. Using a 99% dependence flatten, which of the forthcoming narratements do the grounds patronage? Offspring Prices Grounds Source 

Upscale, dear neighborhoods keep past street nooks. The medium selling charge of a nook-lot offspring is nobleer than that of the medium offspring not located on a nook lot. The medium selling charge of a nook-lot offspring is no past than that of the medium offspring not located on a nook lot. Tshort is not ample proofimony to patronage the assertion that the medium selling charge of a nook-lot offspring is nobleer than that of the medium offspring not located on a nook lot. 

Question 22: Two semiconductor eventories are entity compared to see if tshort is a separation in the medium blemish reproves of the chips they consequence. In the principal eventory, 250 chips are illustrationd. In the assist eventory, 350 chips are illustrationd. The dispensations of blemishive chips are 4.0% and 6.0%, appertainingly. Using a dependence flatten of 95%, which of the forthcoming narratements is patronageed by the grounds? Tshort is not ample proofimony to semblance a telling separation in the medium blemish reproves of the two eventories. Tshort is a telling separation in the medium blemish reproves of the two eventories. The principal eventory's medium blemish reprove is inferior than the assist eventory's on 95 out of 100 days of exercise.None of the overhead. 

Question 23: The retreat separation underneath relates medium annual per capita beef curtail (in pulverizes) and the rebellious fickle "medium annual beef charge" (in dollars per pulverize). The coefficient on beef charge tells us that: 

Beef Curtail and Charge Source For whole charge extension of $1, medium beef curtail curtails by 9.31 pulverizes. For whole charge extension of $1, medium beef curtail extensions by 9.31 pulverizes. For whole charge extension $9.31, medium beef curtail curtails by 1 pulverize. 

For charge extension of $9.31, medium beef curtail extensions by 1 pulverize. 

Question 24: The retreat separation underneath relates medium annual per capita beef curtail (in pulverizes) and the rebellious fickle "medium annual beef charge" (in dollars per pulverize). In a year in which the medium charge of beef is at $3.51 per pulverize, we can forebode medium annual per capita beef curtail to be approximately: 

Beef Curtail and Charge 55.2 pulverizes 52.6 pulverizes 53.6 pulverizes 117.9 pulverizes 

Question 25:
The retreat separation underneath relates medium annual per capita beef curtail (in pulverizes) and the rebellious fickle "medium annual per capita pork curtail" (in pulverizes). 

At what flatten is the coefficient of the rebellious fickle pork curtail telling? 

Beef Curtail and Pork Curtail Source 

0.10. 0.05. 0.01. 

None of the overhead. 

Question 26:
The retreat separation underneath relates medium annual per capita beef curtail (in pulverizes) and the rebellious fickle "medium annual per capita pork curtail" (in pulverizes). 

Which of the forthcoming narratements is penny? 

Beef Curtail and Pork Curtail Source 

Beef curtail can never be short than 65.09 pulverizes. Beef curtail can never be important than 65.09 pulverizes. 

The y-intercept of the retreat sequence is 65.09 pulverizes. The x-intercept of the retreat sequence is 65.09 pulverizes.

Question 27: 

The retreat separation at the foot relates medium annual per capita beef curtail (in pulverizes) and the rebellious fickles "medium annual per capita pork curtail" (in pulverizes) and "medium annual beef charge" (in dollars per pulverize). 

Which of the rebellious fickles is telling at the 0.01 flatten? 

Beef Consumption, Pork Consumption, and Beef Charge Source 

Beef charge solely.
Pork curtail solely. 

Both rebellious fickles. Neither rebellious fickle. 

Question 28: 

The retreat separation at the foot relates medium annual per capita beef curtail (in pulverizes) and the rebellious fickles "annual per capita pork curtail" (in pulverizes) and "medium annual beef charge" (in dollars per pulverize). 

The coefficient for beef charge, -12, tells us that: 

Beef Consumption, Pork Consumption, and Beef Charge Source 

For whole $1 extension in beef charge, medium beef curtail curtails by 12 lbs, not persuasive for pork curtail. 

For whole $12 fall in beef charge, medium beef curtail curtails by 1 lbs, not persuasive for pork curtail. For whole $1 extension in beef charge, medium beef curtail curtails by 12 lbs, persuasive for pork 

consumption, i.e. possession pork curtail stable. 

For whole $12 curtail in beef charge, medium beef curtail curtails by 1 lbs, persuasive for pork curtail, i.e. possession pork curtail stable. 

Question 29: 

The grounds in the Excel spreadsheet linked underneath bestow the seasonally adjusted reprove of whole new car sales (in kindnessites of dollars) in the United States, whole raceal wage and allowance disbursements (referred to short as "compensation") (in billions of dollars), and the usurpation flatten in the non- unwandering sector (in thousands) for 44 continuous quarters. An auto diligence patronageer wants to comprehend how courteous she can foretell new car sales two quarters in track using the ordinary quarter's allowance grounds. 

How frequent grounds material-matters can she use in a retreat separation using the grounds stipulated? 

Car Sales Grounds 41. 42. 43. 44. 

Question 30: 

The Excel spreadsheet linked underneath contains the pure retreats of whole new car sales (in kindnessites of dollars) on each of two rebellious fickles: "compensation" (in billions of dollars) and "usurpation flatten in the non- unwandering sector" (in thousands) . 

Which of the forthcoming rebellious fickles explains past than 90 percent of the observed fluctuate in new car sales? 

Car Sales Pure Regressions Source 

Compensation solely. Usurpation flatten solely.
Both rebellious fickles. Neither rebellious fickle. 

Question 31: 

The retreat separation underneath relates the reprove of new car sales (in kindnessites of dollars) to allowance (in billions of dollars) and the usurpation flatten in the non-unwandering sector (in thousands) for 44 continuous quarters. 

Which of the two rebellious fickles is statistically telling at the 0.05 flatten? 

Car Sales Multiple Retreat Source 

Compensation solely. Usurpation flatten solely.
Both rebellious fickles. Neither rebellious fickle. 

Question 32: 

The retreat separation underneath relates the reprove of new car sales (in kindnessites of dollars) and the rebellious fickles "compensation" (in billions of dollars) and "usurpation flatten in the non -unwandering sector" (in thousands) for 44 continuous quarters. Compare this multiple retreat to the pure retreats after a while allowance and usurpation flatten as the appertaining rebellious fickles. 

Which of the forthcoming is the slight offender of the meretricious extension in the p-reprove for usurpation flatten in the multiple retreat? 

Car Sales Regressions Source Multicollinearity. Heteroskedasticity. Nonlinearity. None of the overhead. 

Question 33:
The retreat separation underneath relates the reprove of new car sales (in kindnessites of dollars) and the rebellious fickles "compensation" (in billions of dollars) and "usurpation flatten in the non-unwandering sector" (in thousands) for 44 continuous quarters. 

The coefficient for usurpation flatten, 0.21, describes: 

Car Sales Multiple Retreat Source 

The deportment of car sales as the usurpations flatten fluctuates, persuasive for allowance. The deportment of the usurpation flatten as car sales fluctuate, not persuasive for allowance. The deportment of car sales as the usurpation flatten fluctuates, not persuasive for allowance. The deportment of the usurpation flatten as car sales fluctuate, persuasive for allowance. 

Question 34: 

A new rank influence texture is entity criterioned. The retreat separation underneath describes the interdependence incompact the 41 criterion materials' diastolic rank influence and the dummy fickle "medication." When a criterion material is commencement the new offal, the reprove of medication is 1, when not, the reprove of medication is 0. 

Which of the forthcoming can be deduced from the retreat separation? 

Blood Influence Source 

The medication has no statistically telling movables (at a 0.01 sentiment flatten). 

The use of medication representations for encircling 42% of the fluctuate in diastolic rank influence.
On medium, criterion materials commencement the medication relation a diastolic rank influence flatten environing 5 material-matters inferior than those 

not commencement the medication. None of the overhead. 

Question 35:
In a retreat separation, a residual devise is: 

A plant diagram that devises the reproves of the residuals despite the reproves of the subject fickle. A plant diagram that devises the reproves of the residuals despite the reproves of an rebellious fickle. 

A histogram that devises the quantity of incontrovertible reprove ranges of the residuals. 

None of the overhead. 

Question 36: 

In a retreat separation, if a new rebellious fickle is assumed and R-squared extensions and adjusted R-squared curtails precipitously, what can be concluded? 

The new rebellious fickle betters the foretellive government of the retreat example. The new rebellious fickle does not better the foretellive government of the retreat example. 

The retreat was done defectively. It is unusable for R-squared to extension and adjusted R-squared curtail concertedly. 

The new rebellious fickle's coefficient is not telling at the 0.01 flatten. 

Question 37: 

The board underneath displays grounds the Principal Bank of Silverhaven (FBS) has cool on the singular savings representations of its job-possession customers. The board includes grounds on the arrangement of the sum of representations held by Homeowners vs. Non-Homeowners, and by whether the customer is Self-Employed or is Industrious by a sconsultation in which he or she does not keep an tenure venture. What is the chance that a bestown representation-holder is self-employed? 15% 12% 3% None of the overhead. 

Question 38: 

The board underneath displays grounds the Principal Bank of Silverhaven (FBS) has cool on the singular savings representations of its job-possession customers. The board includes grounds on the arrangement of the sum of representations held by Homeowners vs. Non-Homeowners, and by whether the customer is Self-Employed or is Industrious by a sconsultation in which he or she does not keep an tenure venture. 

What is the stingy chance that an representation-holder is industrious by a sconsultation in which he or she does not keep an tenure venture, bestown that the representation-holder is a residenceowner? 82.9%68.2%59.5%None of the overhead. 

Question 39: 

The board underneath displays grounds the Principal Bank of Silverhaven (FBS) has cool on the singular savings representations of its job-possession customers. The board includes grounds on the arrangement of the sum of representations held by Homeowners vs. Non-Homeowners, and by whether the customer is Self-Employed or is Industrious by a sconsultation in which he or she does not keep an tenure venture. 

Which of the forthcoming narratements is penny? 

Home tenure and usurpation standing are statistically subject. 

The event that a bestown singular representation is held by a residenceowner tells us pin environing the representation holder's usurpation standing. 

The event that a bestown singular representation is held by a self-industrious special tells us pin environing the representation-holder's residence tenure standing. 

None of the overhead. 

Question 40: 

Electronics creator SE must career whether or not to endow in the product of a new fashion of battery. If the product exceeds, the bargain for the battery may be enlightened or narrow. If it doesn't exceed, the product efforts may or may not genereprove inferior innovations that would offset some of the battery's product costs. The tree underneath summarizes the resolution. 

What is the forebodeed monetary reprove of enlargeing the new battery?   

$0.3 kindnessite -$0.5 kindnessite $0.9 kindnessite $1.5 kindnessite 

Question 41: 

Electronics creator SE must career whether or not to endow in the product of a new fashion of battery. If the product exceeds, the bargain for the battery may be enlightened or narrow. If it doesn't exceed, the product efforts may or may not genereprove inferior innovations that would offset some of the battery's product costs. The tree underneath summarizes the resolution. 

The EMV of enlargeing the new battery is $300,000. Established on EMV, SE should engreat the battery. If the supervisor chooses not to engreat the battery, which of the forthcoming best describes the supervisor's situation towards this resolution?  

Risk indisposed. Risk negative. Risk seeking. Cowardly. 

Question 42: 

Electronics creator SE must career whether or not to endow in the product of a new fashion of battery. If the product exceeds, the bargain for the battery may be enlightened or narrow. If it doesn't exceed, the product efforts may or may not genereprove inferior innovations that would offset some of the battery's product costs. The tree underneath summarizes the resolution. 

The EMV of enlargeing the new battery is $300,000. Established on EMV, SE should engreat the battery. For what reproves of p = Prob[success] does enlargeing the battery keep a inferior EMV than not enlargeing the battery? p < 25% p > 25% p < 75% None of the overhead. 

Question 43: 

Electronics creator SE must career whether or not to endow in the product of a new fashion of battery. If the product exceeds, the bargain for the battery may be enlightened or narrow. If it doesn't exceed, the product efforts may or may not genereprove inferior innovations that would offset some of the battery's product costs. The tree underneath summarizes the resolution. 

The EMV of enlargeing the new battery is $300,000. Established on EMV, SE should engreat the battery. Abandoned that product is prosperityful, for what endsubject-matter reproves for a enlightened bargain does enlargeing the battery keep a inferior EMV than not enlargeing the battery? 

Less than $1.2 kindnessite. Important than $1.2 kindnessite. Important than $0.75 kindnessite. None of the overhead. 

Question 44: 

The supervisor of the Eris Shoe Company must career whether or not to retrench a controversial sports glory as its spokesperson. The new spokesperson's reprove to Eris depends heavily on consumers' sight of him. An primal resolution separation established on beneficial grounds reveals that the forebodeed monetary reprove of retrenching the new spokesspecial is $260,000. For $50,000 Eris can adopt a bargain inquiry sconsultation that procure acceleration Eris acquire past environing how consumers jurisdiction recoil to the glory. The EMV of buying this illustration instruction (pretentious it is easy) for this resolution is $300,000. 

The tree underneath summarizes Eris's resolution. Established on EMV separation, Eris's supervisor should:

Hire the inquiry stable.Not employ the inquiry stable, but retrench the new spokesperson. Not employ the inquiry sconsultation and not retrench the new spokesperson. The acceptance cannot be narrated from the instruction stipulated.