Answer the following questions for the tire problem in Example 8. 7. A. If:-30,960 and a level α =. 01 test is used, what is the decision? b. If a level. 01 test is used, what is β(30,500)? c. If a level. 01 test is used and it is also required that β(30,500) =. 05, what sample size n is necessary? d. If x = 30,960, what is the smallest α at which H0 can be rejected (based on n = 16