DAT/565: Data Analysis And Business Analytics Wk 3 – Practice: Wk 3 Exercise (2 Questions)

The Environmental Protection Agency (EPA) requires that cities warner aggravate 80 contaminants in their drinking instil. Samples from the Lake Huron Instil Treatment Plant gave the results shown less. All observations were underneathneath the lawful apex, as shown by the reputed class of contaminant flattens. (presumably the average would be the midrange).     Substance Class Detected Allowable Maximum Origin of Material   Chromium 0.41 to 0.60 100 Dismiss from steel and wood mills, regular erosion   Barium 0.006 to 0.020 2 Dismiss from order wastes, metal refineries, regular erosion   Fluoride 1.09 to 1.15 4 Regular erosion, instil implied, dismiss from fertilizer and aluminum factories         For each material, consider the banner intermission σ by ostentatious unvaried division and regular division shown in Consideration 8.11 in Section 8.8. (Round your answers to 4 decimal places.)       Uniform Division Regular Division   Chromium               Barium               Fluoride     Version:1.0 StartHTML:000000345 EndHTML:000015923 StartFragment:000001815 EndFragment:000015873 StartSelection:000001999 EndSelection:000015808 SourceURL:https://ezto.mheducation.com/ext/map/index.html?_con=con&external_browser=0&launchUrl=https%253A%252F%252Flms.mheducation.com%252Fmghmiddleware%252Fmheproducts%252FlmsCloseWindow.htm          .video-js {         width: 300px;         height: 150px;       }        .vjs-fluid {         padding-top: 56.25%       }      Connect Item8          2           points ItemSkipped      eBook References Check my exertion Check My Exertion nothing is now disabled Item 8                            Item 8                                                                2          points                                      Item          Skipped     High flattens of cockpit din in an aircraft can hurt the hearing of convoys who are unguarded to this peril for numerous hours. Cockpit din in a jet aircraft is mainly due to airflow at hundreds of miles per hour. This 3 × 3 freedom consideration shows 61 observations of basis self-possessed by an airline convoy using a handheld probe meter in a fixed aircraft cockpit. Din flatten is defined as “low” (underneath 88 decibels), “medium” (88 to 91 decibels), or “high” (92 decibels or more). Tless are three stampede deportments (climb, cruise, depression). Cockpit Din Stampede Deportment Din LevelClimb (B)Cruise (C)Descent (D)Row TotalLow (L) 5  8  5  18 Medium (M) 16  7  2  25 High (H) 6  5  7  18 Column Total 27  20  14  61    Click less for the Excel Basis File (a) Calculate the aftercited probabilities: (Round your answers to 4 decimal places.)     i.P(B)  ii.P(L)  iii.P(H | C)  iv.P(H | D)  v.P(L and B)  vi.P(L and C)   (b) Do you see attraction that din flatten depends on stampede deportment?   Yes No