Refer to the completely randomized design ANOVA conducted in Example 9.4. Are the assumptions required for the

Question:

Refer to the completely randomized design ANOVA conducted in Example 9.4.

Are the assumptions required for the test approximately satisfied?

Example 9.4

Suppose the USGA wants to compare the mean distances associated with four different brands of golf balls when struck with a driver. A completely randomized design is employed, with Iron Byron, the USGA’s robotic golfer, using a driver to hit a random sample of 10 balls of each brand in a random sequence. The distance is recorded for each hit, and the results are shown in Table 9.3, organized by brand.
Table 9.3 Results of Completely Randomized Design: Iron Byron Driver Brand A Brand B Brand C Brand D 251.2