A simple random sample of 10 students is selected from a large college. For the 10 students, the number of days each was absent during the last semester was to be 3, 7, 2, 1, 0, 2, 4, 2, 6, and 2.

a) What is the point estimate forthe mean number of days absent for the college's students?

b)What is the point estimate for^2, the variance of the number of days absent for the college's students?

c) What is the point estimate for, the standard deviation of the number of days absent for the college's students?