Question: A simple random sample of 60 items resulted in a sample mean of 80. The population standard deviation is a = 15. 3. Compute the

A simple random sample of 60 items resulted in a sample mean of 80. The population standard deviation is a = 15. 3. Compute the 95% condence interval for the population mean. Round your answers to one decimal place. ( , ) b. Assume that the same sample mean was obtained from a sample of 120 items. Provide a 95% condence interval for the population mean. Round your answers to two decimal places. ( , ) c. What is the effect of a larger sample size on the interval estimate? Larger sample provides a - Select your answer - v margin of error

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