6 Problem # 7. The president of a large university wishes to estimate the average age of the students presently enrolled. From past studies, the standard deviation of the population is known to be 2 years. A sample of 50 students is selected, and the mean is found to 23.2 years. Find the 95% confidence interval of the population mean? Show all your steps. (10 points) Hint use the formula given on page 300 for E and follow guidelines on page 301 from the textbook. bisbase maldonT runs ban ilidadong