Suppose that in Example 3.3, was 0.15 instead of 0.2 and we decided to adjust the

Suppose that in Example 3.3, σ was 0.15 instead of 0.2 and we decided to adjust the machine if a sample of 16 had a mean weight below 7.9 or above 8.1 (same as before).

(a) What is the probability of a type I error now?

(b) Draw the operating characteristic curve using the rejection region obtained in part (a). LO.1