2. A sample of size 3 is taken from a population of the number of students in each class of Grade 9 students listed as 25, 30,35, and 40. a. What is the population mean (u)? b. How many samples of size 3 are possible? List them and compute the mean of each sample. c. Construct the sampling distribution of the sample means. d. Compute for the mean of the sampling distribution of the sample means (up). e. Compare the population mean () and the sampling distribution of the sample means (up)