We want to obtain a sample to estimate a population mean. Based on previous evidence, researchers believe the population standard deviation is approximately o = 67.5. We would like to be 95% confident that the estimate is within 1.5 of the true population mean. How large of a sample size is required? n =
We want to obtain a sample to estimate a population mean. Based on previous evidence, researchers believe the population standard deviation is approximately o = 67.5. We would like to be 95% confident that the estimate is within 1.5 of the true population mean. How large of a sample size is required? n =
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Transcribed Image Text:We want to obtain a sample to estimate a population mean. Based on previous evidence, researchers
believe the population standard deviation is approximately o = 67.5. We would like to be 95% confident
that the estimate is within 1.5 of the true population mean. How large of a sample size is required?
n =
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