Using Different Values of c and n In Exercise 35, you believe that Ho is not valid. Which of the following allows you to reject Ho? Explain your reasoning.

(a) Use the same values but decrease a from 0.05 to 0.01.

(b) Use the same values but increase a from 0.05 to 0.10.

(c) Use the same values but increase n from 6 to 8.

(d) Use the same values but increase n from 6 to 24.

Deciding on a Distribution In Exercises 37 and 38, decide whether you should use a normal sampling distribution or a t-sampling distribution to perform the hypothesis test. Justify your decision. Then use the distribution to test the claim. Write a short paragraph about the results of the test and what you can conclude about the claim.