Artificial Teeth: Hardness. The data from Exercise 16.59 on the Vickers microhardness (VHN) of the occlusal surfaces among three different materials for making artificial teeth. Use a 95% family confidence level.

In Exercises 16.106–16.109, use Procedure 16.2 on page 743 to perform a Tukey multiple comparison at the specified family confidence level. Note: We have provided values of qa not given in Table IX or X.