To address some customer problem reports, management wants a random sample evaluation to assess the products currently produced. Determine the sample size needed to assess a mean response criterion of...

To address some customer problem reports, management wants a random sample evaluation to assess the products currently produced. Determine the sample size needed to assess a mean response criterion of 75 if risks are at a level of 0.05. Consider that  equals the standard deviation of the process response. State the test hypothesis. Discuss how well the basic test strategy will probably assess the needs of the customer.