The monthly incomes for 1212 randomly selected people, each with a bachelor's degree in economics, are shown on the right. Complete parts (a) through (c) below.
Assume the population is normally distributed.
4450.794450.79
4596.864596.86
4366.984366.98
4455.464455.46
4151.464151.46
3727.433727.43
4283.294283.29
4527.244527.24
4407.134407.13
3946.073946.07
4023.464023.46
4221.194221.19
Question content area bottom
Part 1