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QUESTION
A simple random sample of 85 items from a population with a population standard deviation of 12 resulted with a sample mean of 46. Provide a 90%...
11. A simple random sample of 85 items from a population with a population standard deviation of 12 resulted with a sample mean of 46. Provide a 90% confidence interval for the population mean. What is the margin of error?
12. Using the same information from Problem 11, Provide a 95% confidence interval for the population mean. What is the margin of error?
