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This problem says the average score of all golfers for a particular course has a mean of 70 and a standard deviation of 5.
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Suppose 100 golfers played the course today.
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Find the probability that the average score of the 100 golfers exceeded 71, rounding to four decimal places.
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And here, since we weren't told our population is normally distributed, we need to look at our sample size.
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And since it is greater than or equal to 30, our central limit theorem applies, which means we can treat our sampling distribution as approximately normal, which means we can find our probability using normal cdf in our calculator.
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And for normal cdf to find a probability, you need four values.
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And the first two values you need are the lower bound and the upper bound that you want the probability between.
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And in our case, we want to be greater than 71 or exceed 71 for the sample mean...