Q2) Life of a battery in hours is known to be approximately normally distributed with standard deviation of a=1.25 h. A random sample of 10 batteries has a mean life of 40.5 hours. a) Is there evidence to support the claim that the mean battery life exceeds 40 hours. Use α=0.05 b) What is the probability of rejection area?

MATLAB: An Introduction with Applications
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Author:Amos Gilat
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Chapter1: Starting With Matlab
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Q2) Life of a battery in hours is known to be approximately normally distributed with
standard deviation of o=1.25 h. A random sample of 10 batteries has a mean life of 40.5
hours.
a) Is there evidence to support the claim that the mean battery life exceeds 40 hours.
Use α=0.05
b) What is the probability of rejection area?
Transcribed Image Text:Q2) Life of a battery in hours is known to be approximately normally distributed with standard deviation of o=1.25 h. A random sample of 10 batteries has a mean life of 40.5 hours. a) Is there evidence to support the claim that the mean battery life exceeds 40 hours. Use α=0.05 b) What is the probability of rejection area?
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