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 of each brand. The tires are run until they wear out. The results are given in the table below. Compute a 90% confidence interval for HA - HR assuming the populations to be approximately normally distributed. You may not assume that the variances are equal. Brand A X, = 34,900 kilometers s, = 4600 kilometers X2 = 38,900 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 S, = 6400 kilometers The confidence interval is
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 of each brand. The tires are run until they wear out. The results are given in the table below. Compute a 90% confidence interval for HA - HR assuming the populations to be approximately normally distributed. You may not assume that the variances are equal. Brand A X, = 34,900 kilometers s, = 4600 kilometers X2 = 38,900 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 S, = 6400 kilometers The confidence interval is
MATLAB: An Introduction with Applications
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ISBN:9781119256830
Author:Amos Gilat
Publisher:Amos Gilat
Chapter1: Starting With Matlab
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Problem 1P
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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 16
of each brand. The tires are run until they wear out. The results are given in the table below. Compute a 90% confidence interval for HA- HR assuming the populations to be
approximately normally distributed. You may not assume that the variances are equal.
Brand A
X, = 34,900 kilometers
s, = 4600 kilometers
X2 = 38,900 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
S, = 6400 kilometers
The confidence interval is < HA - HB <U.
(Round to the nearest integer as needed.)
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