The Lifetime of a Squirrel Follows a Normal Distribution with Mean

question 91

Multiple Choice

The lifetime of a squirrel follows a normal distribution with mean μ = 40 months and a standard deviation $\sigma$ = 7 months.To test the hypothesis that μ > 40, 25 squirrels are randomly selected.Assuming that μ = 45, and α = 0.1, the probability of type II error is approximately

• A)0.076
• B)0.016
• C)0.05
• D)0.011
• E)0.983

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