The Haines Lumber Company makes plywood for the furniture industry. One of its products is 3/4-inch oak veneer panels. It is very important that the panels conform to specifications. One specification calls for the panels to be made to an average thickness of 0.75 inch. Suppose each hour, 5 panels are selected at random and measured.

After 20 hours, a total of 100 panels have been measured.

The thickness measures are in a file called Haines.

a. Formulate the appropriate null and alternative hypotheses relative to the thickness specification.

b. Based on the sample data, what should the company conclude about the status of its product meeting the thickness specification? Test at a significance level of 0.01. Discuss your results in a report to the production manager.