Question: Question 1: A simple random sample of 60 items resulted in a sample mean of 80. The population standard deviation 15. 1. Compute the 95%

Question 1: A simple random sample of 60 items resulted in a sample mean of 80. The population standard deviation 15. 1. Compute the 95% confidence interval for the population mean. 2. Assume that the same sample mean was obtained from a sample of 120 items. Provide a 95% confidence interval for the population mean. Question 2: A 95% confidence interval for a population mean was reported to be 152 to 160. If o = 15, what sample size was used in this study

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