You want to demonstrate that a sample of n = 100 has a higher mean than a population where $\sigma$ = 5 and $\mu$ = 11. If x̄ = 10, what is the correct decision?
A) Fail to reject the null.
B) Reject the null.
C) Fail to reject the alternative.
D) Accept the alternative.

Question

Quizplus · Accepted Answer

The sample mean x̄ = 10 is less than the population mean μ = 11, so we fail to reject the null hypothesis that the sample mean is not higher than the population mean.

You Want to Demonstrate That a Sample of N = σ\sigmaσ

You Want to Demonstrate That a Sample of N = $\sigma$