Solve the following problems:
Q1. The ages of all the patients in the isolation ward of the hospital are 38, 26, 13, 41, and 22. What are the population mean, variance, and standard deviation?
Q2. The weights of a sample of seven FedEx shipments, to the nearest pound, are 10, 7, 11, 10, 13, 5, and 4. Compute the sample mean, the median, and the modal weight.
Q3. The following is the number of shares traded (in 1,000's) for a sample of eight stocks listed on the New York Stock Exchange; 62, 41, 60, 49, 39, 45, 26, and 38. Compute the mean, range, and standard deviation.