A Sample of 30 Cookies Is Taken to Test the Claim

Essay

A sample of 30 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 7.8 with a standard deviation of 3.
a.
State the null and alternative hypotheses.
b.
Using the critical value approach, test the hypotheses at the 5% level of significance.
c.
Using the p-value approach, test the hypotheses at the 5% level of significance.
d.
Compute the probability of a Type II error if the true number of chocolate chips per cookie is 8.