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Data Golf Ball Distance Test Distance Measured in Yards Current 264 261 267 272 258 283 258 266 259 270 263 264 284 263 260 283 255 272 266 268 270

To complete this scenario, use the Golf Ball Distance Test Excel file linked in the Resources.
A major manufacturer of golf equipment seeks to improve its market share by introducing a golf ball that is less likely to slice when hit. The company's research and development group has been experimenting with dimple patterns that promote straight flight, and have achieved some degree of success. The vice president of marketing, however, is worried about the effect that the new pattern might have on driving distance.
"I do not care how slice-resistant this ball is, if it does not go as far as the old one, no one is going to buy it. Telling a golfer to buy some ball that cannot be driven as far as the old one is a complete non-starter," he commented to the development project manager.
To investigate this issue, the research and development group did a test to compare the driving distances for the two balls: 40 balls of the new type, and 40 of the old. They used a mechanical hitting machine to control all factors other than the balls themselves. The resulting data of distance measured to the nearest yard for each of the 80 balls that were hit is provided in the Golf Ball Distance Test Excel file."
What is the null hypothesis that the research and development group is testing?
Ho:

Ha:
• Analyze the data in the Excel file.
o What is the appropriate statistical test for determining the null hypothesis?
o What is the p-value?
o What should you tell the vice president of marketing?
Data Page 1 Golf Ball Distance Test Distance Measured in Yards Current New 264 277 261 269 267 263 272 266 258 262 283 251 258 262 266 289 259 286 270 264 263 274 264 266 284 262 263 271 260 260 283 281 255 250 272 263 266 278 268 264 270 272 287 259 289 264 280 280 272 274 275 281 265 276 260 269 278 268 275 262 281 283 274 250 273 253 263 260 275 270 267 263 279 261 274 255 276 263 262 279
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