The monthly incomes for 12 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. 4450.42 4455.18 4283.23 3946.93 4596.82 4151.16 4527.88 4023.62 4366.36 3727.12 4407.03 4221.59

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