We want to obtain a sample to estimate a population mean. Based on previous evidence, researchers believe the population

Question

We want to obtain a sample to estimate a population mean. Based on previous evidence, researchers believe the population standard deviation is approximately σ = 1.3. We would like to be 90% confident that the esimate is within 0.5 of the true population mean. How large of a sample size is required?

Kunduz · Accepted Answer

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