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The United States Golf Association (USGA) tests all new brands of go

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The United States Golf Association (USGA) tests all new
brands of golf balls to assure that they meet USGA
specifications. One of the tests is intended to measure the
average distance traveled when the ball is hit by a
machine called Iron Byron, a name inspired by the swing
of the famous golfer Byron Nelson. The USGA proceeded to
test with the Iron Byron machine over 250 golf balls of a
new type called Ballistic, recording the distance travelled
of each one. What distribution will the sample average of
the distance travel follow? The discrete distribution The
binomial distribution The normal distribution
Solution
this should be normal distribution as distance travelled is
not a discrete variable, therefore binomial and discrete
distribution is discarded.
Also as we are interested in average which will be centred
around its value in bell curve.

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The United States Golf Association (USGA) tests all new brands of golf balls to assure that they meet USGA specifications. One of the tests is intended to measure the average distance traveled when the ball is hit by a machine called “Iron Byron”, a name inspired by the swing of the famous golfe ...
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