A simple random sample of size n=15 is drawn from a population that is normally distributed. The sample mean is found to be x=26.9 and the sample standard deviation is found to be s=6.3. Determine if...

A simple random sample of size n=15 is drawn from a population that is normally distributed. The sample mean is found to be x=26.9 and the sample standard deviation is found to be s=6.3. Determine if the population mean is different from 25 at the α=0.01 level of significance.

Calculate the P-Value.