Assume that a sample is used to estimate a population mean u. Find the 95% confidence interval for a sample of size 48 with a mean of 79.2 and a standard deviation of 19.2. Enter your answer as an open-interval (i.e., parentheses) accurate to one decimal place (because the sample statistics are reported accurate to one decimal place). 95% C. I. = Answer should be obtained without any preliminary rounding. However, the critical value may be rounded to 3 decimal places