Final Exam Winter 2022 - Google Chrome X mylab.pearson.com/Student/PlayerTest.aspx?testld=241544758¢erwin=yes Statistics for Analytics II Spring/Summer 2022B Neda Rostami 08/17/22 7:42 PM = Test: Final Exam Winter 2022 Question 22 of 30 This test: 30 point(s) possible This question: 1 point(s) possible Submit test In an experiment on braking performance, a tire manufacturer measured the stopping distance for one of its tire models. On a test track, a car made repeated stops from 60 miles per hour. Twenty tests were run, 10 each on both dry and wet Question list K pavement, with results shown in the accompanying table. (Note that the actual braking distance, which takes into account the driver's reaction time, is much longer, typically near 300 feet at 60 mph!) Complete parts a and b below. Click the icon to view the data table. O Question 13 Question 14 a) Find a 95% confidence interval for the mean dry pavement stopping distance. Be sure to check the appropriate assumptions and conditions, and explain what your interval means. Select all the appropriate assumptions and conditions. Question 15 A. The dry pavement stops were made under different conditions and not paired in any way. The independent groups assumption is satisfied. B. These stops are probably representative of all such stops for this type of car, but not for all cars. The randomization condition is satisfied. C. A Normal probability plot of the stopping distances is roughly straight. The nearly Normal condition is satisfied. Question 16 We are 95% confident that the mean stopping distance for this type of car on dry pavement is between |] and ] feet. (Round to one decimal place as needed.) Question 17 b) Find a 95% confidence interval for the mean increase in stopping distance on wet pavement. Be sure to check the appropriate assumptions and conditions, and explain what your interval means. Select all the appropriate assumptions and conditions. Question 18 A. These stops are probably representative of all such stops for this type of car, but not for all cars. The randomization condition is satisfied. B. The wet pavement stops and dry pavement stops were made under different conditions and not paired in any way. The independent groups assumption is satisified. O Question 19 C. The histogram of wet pavement stopping distances is approximately Normal with no outliers. The nearly Normal condition is satisfied We are 95% confident that the mean increase in stopping distance for this type of car on wet pavement is between |] and ] feet. (Round to one decimal place as needed.) O Question 20 Question 21 O Question 22 Activate Windows Go to Settings, to activate Windows Time Remaining: 01:18:12 Next Type here to search O 24'C Cloudy ~ 9 - () ENG 7:39 PM 99+ X 2022-08-17 E