(a) State the Null and Alternate Hypotheses. (b) Which is the claim? (c) Describe the reject region as left-tailed, right-tailed or two-tailed. (d) Will you use a z-test or a t-test? What is the critical value? (e) Find the sample statistic. (f) Do you reject or fail to reject the claim? Write out your decision in at least one sentence. 20. A report by a restaurant reviewer claims that serving staff at all casual dining restaurants in New Jersey receive at least $100 in tips with a standard deviation of $15. Colleen who works as a server in a casual dining restaurant in New Jersey believes this claim is wrong. She records her tips over a 30-day period and finds that the average $93. Using a 1% significance level, test the claim.