SOLVED:What is necessary to determine the sample size?

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SOLVED: Determine the sample size required to estimate a population mean to within 11 units given that the population standard deviation is 60. A confidence level of 90% is judged to be appropriate.Sample Size = Determine the sample size required to estimate a population mean to within 11 units given that the population standard deviation is 85. Use a confidence level of 90%.Sample Size = Determine the sample size required to estimate a population mean to within 11 units given that the populatio

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