A taxi company is trying to decide whether to purchase brand A or brand B tires for its fleet of taxis. To estimate the

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A Taxi Company Is Trying To Decide Whether To Purchase Brand A Or Brand B Tires For Its Fleet Of Taxis To Estimate The 1 (149.05 KiB) Viewed 111 times

A taxi company is trying to decide whether to purchase brand A or brand B tires for its fleet of taxis. To estimate the difference in the two brands, an experiment is conducted using 8 of each brand, assigned at random to the left and right rear wheels of 8 taxis. The tires are run until they wear out and the distances, in kilometers, are recorded in the accompanying data set. Find a 99% confidence interval for un - H2. Assume that the differences of the distances are approximately normally distributed. Click here to view the data set. Click here to view page 1 of the table of critical values of the t-distribution. Click here to view page 2 of the table of critical values of the t-distribution. Let u1 be the population mean for brand A and let uz be the population mean for brand B. The confidence interval is <H1-H2+]). (Round to one decimal place as needed.) X Х i - Data Set Taxi 1 2 3 4 5 6 7 8 Brand A 42,000 45,000 37,000 39,500 42,900 42,000 47,800 46,500 Brand B 43,800 46,400 38,200 39,000 41,100 45,200 48,100 47,100 Print Done