One the selling points of golf balls is their durability. An independent testing laboratory is commission to compare the durability of three different brands of golf balls. Balls of each type will be put inte machine that hits the balls with the same force that a golfer uses on the course. The number of hits requir until the outer covering cracks is recorded for each ball, with the results given the table below. Ten ba from each manufacturer are randomly selected for testing Brand A 310 261 233 235 219 289 279 263 301 306 247 264

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One the selling points of golf balls is their durability. An independent testing laboratory is commissioned
to compare the durability of three different brands of golf balls. Balls of each type will be put into a
machine that hits the balls with the same force that a golfer uses on the course. The number of hits required
until the outer covering cracks is recorded for each ball, with the results given the table below. Ten balls
from each manufacturer are randomly selected for testing
Brand
A
В
310
261
233
235
219
289
279
263
301
306
247
264
237
288
273
284
197
208
259
207
245
273
221
271
219
244
298
301
228
276
Is there evidence that the mean durability of the three brands differs? Use a=0.05
Transcribed Image Text:One the selling points of golf balls is their durability. An independent testing laboratory is commissioned to compare the durability of three different brands of golf balls. Balls of each type will be put into a machine that hits the balls with the same force that a golfer uses on the course. The number of hits required until the outer covering cracks is recorded for each ball, with the results given the table below. Ten balls from each manufacturer are randomly selected for testing Brand A В 310 261 233 235 219 289 279 263 301 306 247 264 237 288 273 284 197 208 259 207 245 273 221 271 219 244 298 301 228 276 Is there evidence that the mean durability of the three brands differs? Use a=0.05
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