Refer to Exercise 72. Suppose sample size was 36 rather than 12. Show the test and report your decision.
In exercise
David Ricardo of Iron Law, Inc. claims that he meets the company standard of spending an average of “no more than $ 8 a day” on business lunches. As company auditor, you take a random sample of 12 of David’s recent lunch receipts and find that the average lunch check for the sample was $ 11.04, with a sample standard deviation of $ 3.40. Assume that the population of David’s lunch check amounts is normal.