A bank tests the null hypothesis that the mean age of the bank's mortgage holders is less than or equal to 45 years, versus an alternative that the...

A bank tests the null hypothesis that the mean age of the bank's mortgage holders is less

than or equal to 45 years, versus an alternative that the mean age is greater than 45 years.

They take a sample and calculate a p-value of 0.0202. The null hypothesis would be rejected at a significance level of α= 0.05.

Please answer with calculation and explanation