A tire company claims that the lifetimes of its tires average 50,000 miles. The standard deviation of tire lifetimes is known to be 5,261 miles. You sample 100 tires and will test the hypothesis that the mean tire lifetime is at least 50,000 miles against the alternative that it is less. Assume, in fact, that the true mean lifetime is 49,545 miles. It is decided to reject Ho if the sample mean is less than 48,894. Find the level and power of this test. 0 Round your answers to four decimal places.

MATLAB: An Introduction with Applications
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Author:Amos Gilat
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A tire company claims that the lifetimes of its tires average 50,000 miles. The standard
deviation of tire lifetimes is known to be 5,261 miles. You sample 100 tires and will test
the hypothesis that the mean tire lifetime is at least 50,000 miles against the alternative
that it is less. Assume, in fact, that the true mean lifetime is 49,545 miles. It is decided to
reject Ho if the sample mean is less than 48,894. Find the level and power of this test.
0
Round your answers to four decimal places.
Level of the test =
Power of the test =
Transcribed Image Text:A tire company claims that the lifetimes of its tires average 50,000 miles. The standard deviation of tire lifetimes is known to be 5,261 miles. You sample 100 tires and will test the hypothesis that the mean tire lifetime is at least 50,000 miles against the alternative that it is less. Assume, in fact, that the true mean lifetime is 49,545 miles. It is decided to reject Ho if the sample mean is less than 48,894. Find the level and power of this test. 0 Round your answers to four decimal places. Level of the test = Power of the test =
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