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An instructor gives a 100-item multiple choice examination. Each question has four alternatives. If the student knows nothing about the subject and selects answers by chance,

(a) What is the probability for a given question that it will be answered correctly?

(b) What is the expected number of correct answers for a given student (assuming he or she attempts all questions)?

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Statistics and Probability, Statistics

Category:- Statistics and Probability
Reference No.:- M92681002

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