2. A sample of 16 cookies is taken to test the claim that each cookie contains at least 9 chocolate chips. The average number of chocolate chips per cookie in the sample was 7.875 with a standard deviation of 1. Assume the distribution of the population is normal.

a.

State the null and alternative hypotheses.

b.

Using a critical value, test the hypothesis at the 1% level of significance.

c.

Using ap-value, test the hypothesis at the 1% level of significance.