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?

Calculus For The Life Sciences
2nd Edition
ISBN:9780321964038
Author:GREENWELL, Raymond N., RITCHEY, Nathan P., Lial, Margaret L.
Publisher:GREENWELL, Raymond N., RITCHEY, Nathan P., Lial, Margaret L.
Chapter13: Probability And Calculus
Section13.CR: Chapter 13 Review
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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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