Average score on a particular golf course

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A sample of 84 golfers showed that their average score on a particular golf course was 89.05 with a standard deviation of 3.47.

Answer each of the following (show all work and state the final answer to at least two decimal places.):

(A) Find the 98% confidence interval of the mean score for all 84 golfers.

(B) Find the 98% confidence interval of the mean score for all golfers if this is a sample of 115 golfers instead of a sample of 84.

(C) Which confidence interval is smaller and why?

Reference no: EM13103148

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