Callaway's new driver has been described as illegal because it promises driving distances that exceed USGA stadards. Golf Digest conducted a test consisting of 9 drives with a USGA approved driver and found the mean driving distance to be 280 yards. The mean driving distance of the Callaway driver was 286.9 with a sample standard deviation of 10 years.
State null & alternate hypothesis, state decision rule, show calculation, state results
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