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 results are given in the table below. Compute a 95% confidence interval for HA- Ha assuming the populations to be approximately normally distributed. You may not assume that the variances are equal. conducted using 14 of each brand. The tires are run until they v Brand A X, = 35,000 kilometers s, =5100 kilometers S, = 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. Brand B The confidence interval is

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conducted using 14 of each brand. The tires are run until they wear out. The
A taxi company is trying to decide whether to purchase brand A or brand
results are given in the table below. Compute a 95% confidence interval for HA- Ha assuming the populations to be approximately normally distributed. You may not assume that the variances are equal.
tires for its fleet of taxis. To estimate the difference in the two brands, an experiment
Brand A
X = 35,000 kilometers
s, = 5100 kilometers
S, = 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.
Brand B
The confidence interval is <HA- Ha <
(Round to the nearest integer as needed.)
Transcribed Image Text:conducted using 14 of each brand. The tires are run until they wear out. The A taxi company is trying to decide whether to purchase brand A or brand results are given in the table below. Compute a 95% confidence interval for HA- Ha assuming the populations to be approximately normally distributed. You may not assume that the variances are equal. tires for its fleet of taxis. To estimate the difference in the two brands, an experiment Brand A X = 35,000 kilometers s, = 5100 kilometers S, = 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. Brand B The confidence interval is <HA- Ha < (Round to the nearest integer as needed.)
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