You want to obtain a sample to estimate a population mean. Based on previous evidence, you believe the population standard deviation is approximately o = 70.4. You would like to be 99.5% confident...

Extracted text: You want to obtain a sample to estimate a population mean. Based on previous evidence, you believe the population standard deviation is approximately o = 70.4. You would like to be 99.5% confident that your esimate is within 2 of the true population mean. How large of a sample size is required? n = Do not round mid-calculation. However, use a critical value accurate to three decimal places – this is important for the system to be able to give hints for incorrect answers.