Refer to Example 10.7. Suppose the randomized block design of part b is employed, utilizing a random sample of 10 golfers, with each golfer using a driver to hit four balls, one of each brand, in a random sequence.

a. Set up a test of the research hypothesis that the brand mean distances differ. Use a = .05.

b. The data for the experiment are given in Table 10.8. Use statistical software to analyze the data, and conduct the test set up in part a.

 LO4 Distance Data for Randomized Block Design Golfer (Block) Brand A Brand B Brand C Brand D 1 202.4 203.2 223.7 203.6 2 242.0 248.7 259.8 240.7 3 220.4 227.3 240.0 207.4 4 230.0 243.1 247.7 226.9 5 191.6 211.4 218.7 200.1 6 247.7 253.0 268.1 244.0 7 214.8 214.8 233.9 195.8 8 245.4 243.6 257.8 227.9 9 224.0 231.5 238.2 215.7 10 252.2 255.2 265.4 245.2 Sample means 227.0 233.2 245.3 220.7