A taxi company is trying to decide whether to purchase brand A or brandB tires for its fleet of taxis. To estimate the difference in the two brands, an experiment is conducted using 14 of each brand. The tires are run until they wear out. The results are given in the table below. Compute a 95% confidence interval for uA-He assuming the populations to be approximately normally distributed. You may not assume that the variances are equal. Brand A X, = 35,000 kilometers s, = 5100 kilometers Brand B S2 = 6500 kilometers X2 = 38,800 kilometers 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. The confidence interval is -8357
A taxi company is trying to decide whether to purchase brand A or brandB tires for its fleet of taxis. To estimate the difference in the two brands, an experiment is conducted using 14 of each brand. The tires are run until they wear out. The results are given in the table below. Compute a 95% confidence interval for uA-He assuming the populations to be approximately normally distributed. You may not assume that the variances are equal. Brand A X, = 35,000 kilometers s, = 5100 kilometers Brand B S2 = 6500 kilometers X2 = 38,800 kilometers 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. The confidence interval is -8357
Glencoe Algebra 1, Student Edition, 9780079039897, 0079039898, 2018
18th Edition
ISBN:9780079039897
Author:Carter
Publisher:Carter
Chapter10: Statistics
Section10.3: Measures Of Spread
Problem 1GP
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Transcribed Image Text: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 14 of each brand. The tires are run until they wear out. The results
are given in the table below. Compute a 95% confidence interval for uA-He assuming the populations to be approximately normally distributed. You may not assume that the variances are equal.
Brand A
X = 35,000 kilometers
s, = 5100 kilometers
Brand B
S, = 6500 kilometers
X, = 38,800 kilometers
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.
The confidence interval is - 8357 <HA- Ha 757.
(Round to the nearest integer as needed.)
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