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12 March, 09:55

Golf-course designers have become concerned that old courses are becoming obsolete since new technology has given golfers the ability to hit the ball so far. designers, therefore, have proposed that new golf courses need to be built expecting that the average golfer can hit the ball more than 260 yards on average. suppose a random sample of 131 golfers be chosen so that their mean driving distance is 257 yards. the population standard deviation is 42.9. use a 5% significance level.

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  1. 12 March, 12:15
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