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Suppose you wish to estimate a population mean based on a sample of n observations. What sample size is required if you want your estimate

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Suppose you wish to estimate a population mean based on a sample of n observations. What sample size is required if you want your estimate to be within 2 of with probability.r equal to 035 if you know the population standard deviation is 12? O 12? O 196 O 98 O 239 O 139

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