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The monthly incomes for 1212 randomly selected people, each with a bachelor's degree in economics, are...
The monthly incomes for 1212 randomly selected people, each with a bachelor's degree in economics, are shown on the right. Assume the population is normally distributed. 4450.144450.14 4596.934596.93 4366.914366.91 4455.954455.95 4151.884151.88 3727.273727.27 4283.474283.47 4527.154527.15 4407.784407.78 3946.013946.01 4023.194023.19 4221.914221.91 (a) Find the sample mean. x overbarxequals=4263.24263.2 (Round to one decimal place as needed.) (b) Find the sample standard deviation. sequals=nothing (Round to one decimal place as needed.)
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