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The mean of the random variable x the standard deviation of

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Reference no: EM13617137

On a multiple choice test of 13 questions, each question has four (4) possible answers, one of which is correct. For students who guess at all answers, Find the following, if X is the number of correct answers.

i. The mean of the random variable X

ii. The standard deviation of the random variable X

Reference no: EM13617137

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