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A quiz consists of 80 multiple choice questions each with five possible answers only one...

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A quiz consists of 80 multiple choice questions each with five possible answers only one of which is correct If a student guesses on each question what is the mean and standard deviation of the number of correct answers Round to three decimal places OA mean 4 standard deviation 2 OB mean 16 standard deviation 1 265 OC mean 16 standard deviation 3 578 OD mean 4 standard deviation 3 578

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