A golf instructor wants to determine if the drive distance is different for three golf ball brands while controlling for the natural differences in driving distance we would expect across golfers. The instructor has several of his students drive the different brands and collects the following data.
At α = .05, do the driving distances differ significantly between golf-ball brands while controlling for the natural differences between golfers?

Golf Ball Brands Sapphire Miller Cruiser Golfer Brad 275 350 295 Will 300 525 380 Huang 245 286 300 Singh 220 256 286 415 Woods 400 475 Fisher 356 385 396