Lifespans of male mice have a mean of 860 days and standard deviation of 40 days....
Lifespans of male mice have a mean of 860 days and standard deviation of 40 days. The distribution is slightly left skewed. Sample mean lifespan for a sample of 64 mice has what mean and standard deviation of days?
Homework Answers
By the central limit theorem, the distribution of sample mean will be approximately normal with:
Mean days = Population mean = 860 days
Standard deviation = 
= 40/8
= 5 days
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Lifespans of male mice have a mean of 860 days and standard
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