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A quiz consists of 50 multiple choice questions each with five possible answers only one...

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A quiz consists of 50 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 O A mean 10 standard deviation 2 828 B mean 2 5 standard deviation 2 828 C mean 2 5 standard deviation 1 581 OD mean 10 standard deviation 1

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