Based on a sample of 25 people in your elite running club who recently participated in a
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Question:
Based on a sample of 25 people in your elite running club who recently participated in a track competition, the average time to complete a half-marathon was 1.04 hours with a standard deviation of 0.09. You wish to estimate what the mean time for all elite runners is in the country. If you want to be 95% certain that you give an estimate that will contain the true population mean, what would it be?
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