Each of 100 multiple-choice questions on an exam has four possible answers but one correct response. For

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Each of 100 multiple-choice questions on an exam has four possible answers but one correct response. For each question, a student randomly selects one response as the answer.

a. Specify the probability distribution of the student’s number of correct answers on the exam.

b. Based on the mean and standard deviation of that distribution, would it be surprising if the student made at least 50 correct responses? Explain your reasoning.

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