The Lifetime of a Squirrel Follows a Normal Distribution with Mean

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 power is approximately

A) 0.076
B) 0.016
C) 0.05
D) 0.011
E) 0.989