A manager would like to estimate the average amount spent by a couple for dinner at his restaurant. A random sample of 30 couples provided a sample mean per couple of $78.25. Assume that the population standard deviation per couple is $22.50. Compute and explain a 95% confidence interval estimate of the population mean. show work

Answer rating: 100% (QA)

given than n 30 sd 225 mean 7825 we know that ... View the full answer