Which of the following is not needed in calculating a confidence interval for a population mean? a. The population standard deviation b. A point estimate of the population mean c. A confidence level. d. The population size
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The population standard deviation: This is needed because it helps determine the variability of the population. b. A point estimate of the population mean: This is needed as a starting point for estimating the population mean. It can be obtained from a sample Show more…
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