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The Brand A cellphone company claims that its phones have an almost the same lifespan as of the Brand B cellphone company. A test is conducted to validate whether the claim is true. 18 phones from Brand A and 24 phones from Brand B are chosen for testing, and it was found that the mean life for each is 32 and 35 months for Brand A and Brand B, respectively. The standard deviation for Brand A is 5 months while 7 months for Brand B. Test the hypothesis using a level of significance of 1%.

The Brand A cellphone company claims that its phones have an almost the same lifespan as of the Brand B cellphone company. A test is conducted to validate whether the claim is true. 18 phones from Brand A and 24 phones from Brand B are chosen for testing, and it was found that the mean life for each is 32 and 35 months for Brand A and Brand B, respectively. The standard deviation for Brand A is 5 months while 7 months for Brand B. Test the hypothesis using a level of significance of 1%.

MATLAB: An Introduction with Applications
MATLAB: An Introduction with Applications
6th Edition
ISBN:9781119256830
Author:Amos Gilat
Publisher:Amos Gilat
Chapter1: Starting With Matlab
Section: Chapter Questions
Problem 1P
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Problem 1: The Brand A cellphone company claims that its phones have an almost the same lifespan as of the Brand B cellphone company. A test is conducted to validate whether the claim is true. 18 phones from Brand A and 24 phones from Brand B are chosen for testing, and it was found that the mean life for each is 32 and 35 months for Brand A and Brand B, respectively. The standard deviation for Brand A is 5 months while 7 months for Brand B. Test the hypothesis using a level of significance of 1%.

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