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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

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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 a Find the sample mean x 4263 1 Round to one decimal place as needed b Find the sample standard deviation S Round to one decimal place as needed 4450 31 4455 08 4283 49 3946 76 4596 4151 452 402

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