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a. The mean and standard deviation of a sample of 100 is x = 1500 and s = 300. Estimate the population mean with 95%

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a. The mean and standard deviation of a sample of 100 is x = 1500 and s = 300. Estimate the population mean with 95% confidence. b. Repeat part (a) with s = 200. c. Repeat part (a) with s = 100. d. Discuss the effect on the confidence interval estimate of decreasing the standard deviation s

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