For each of the data sets in parts a–d, compute x, s2, and s.

a. 13, 1, 10, 3, 3

b. 13, 6, 6, 0

c. 1, 0, 1, 10, 11, 11, 15

d. 3, 3, 3, 3

e. For each of the data sets in parts a–d, form the interval x { 2s and calculate the percentage of the measurements that fall into that interval.