Previously, an organization reported that teenagers spend 4.5 hours per week, on

average, on the phone with a standard deviation of 2.0. To test the accuracy of the claim about

the mean, sixteen randomly chosen teenagers were asked how many hours per week they

spend on the phone. The sample mean was 4.75 hours with a sample standard deviation of 2.2.

Conduct a hypothesis test:

1. By applying the seven-step p-value procedure, test the claim at the 0.01 level of significance.

1. By applying the seven-step classical hypothesis-testing procedure, test the claim at the 0.01 level of significance.