To test whether a golf ball of brand A can be hit a greater distance off the tee than a golf ball of brand B, each of 17 golfers hit a ball of each brand, 8 hitting ball A before ball B and 9 hitting ball B before ball A. The results in yards are as follows: Distance Distance Distance Distance for for for for Golfer Ball A Ball B Golfer Ball A Ball B 265 252 10 274 260 2 272 276 11 274 267 3 246 243 12 269 267 260 246 13 244 251 5 274 275 14 212 222 6 263 246 15 235 235 255 244 16 254 255 258 245 17 224 231 A company that manufactures motors receives reels of 10,000 terminals per reel. Before using a reel of terminals, 20 terminals are randomly selected to be tested. The test is the amount of pressure needed to pull the terminal apart from its mate. This amount of pressure should continue to increase from test to test as the terminal is "roughed up." (Since this kind of testing is destructive testing, a terminal that is tested cannot be used in a motor. ) Let Wequal the difference of the pressures: "test No. 1 pressure" minus "test No. 2 pressure." Assume that the distribution of Wis /(pw. Ow ). We shall test the null hypothesis Ho: Pw = 0 against the alternative hypothesis H1: Pw