11.37 The manager of an assembly process wants to determine whether or not the number of defective articles manufactured depends on the day of the week the articles are produced. She collected the following information.

Day of Week M Tu W Th F Nondefective 85 90 95 95 90 Defective 15 10 5 5 10 Is there sufficient evidence to reject the hypothesis that the number of defective articles is independent of the day of the week on which they are produced?

Use   0.05.

a. Solve using the p-value approach.

b. Solve using the classical approach.