At a local university, a sample of 49 evening students was selected in order to determine whether the average age of the evening students is significantly different from 21. The average age of the students in the sample was 23 with a standard deviation of 3.5. Determine the p-value and test these hypotheses. Let a = .05.

1.Formulate the null and alternative hypotheses

2.Select the significance level

3.Select the test statistic and calculate its value.

4.Identify p-value/critical value for the test statistics and state the decision rule

5. Compare calculated and critical values and reach a conclusion about the null hypothesis