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Question 7, 8.3.121 Identify the formula for the margin of error for the estimate of a population mean when the population standard deviation is

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Question 7, 8.3.121 Identify the formula for the margin of error for the estimate of a population mean when the population standard deviation is unknown. Choose the correct answer below. OA. E=- S n OB. E=/27 S n S OC. E=x+ta/2n S OD. E=x-ta/2n

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