A simple random sample of 60 items resulted in a sample mean of 79. The population standard deviation is 17. a. Compute the 95% confidence interval for the population mean (to 1 decimal). b. Assume...

Extracted text: A simple random sample of 60 items resulted in a sample mean of 79. The population standard deviation is 17. a. Compute the 95% confidence interval for the population mean (to 1 decimal). b. Assume that the same sample mean was obtained from a sample of 120 items. Provide a 95% confidence interval for the population mean (to 2 decimals). C. What is the effect of a larger sample size on the margin of error? V Select It increases It decreases It stays the same It cannot be determined trom the given data