What is the probability for a given question

Reference no: EM131852645

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)?

Reference no: EM131852645

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