Question: Suppose a multiple choice test contains 40 questions. If each question has 5 answer choices only one of which is correct, what is the

Suppose a multiple choice test contains 40 questions. If each question has

Suppose a multiple choice test contains 40 questions. If each question has 5 answer choices only one of which is correct, what is the expected number of questions to be answered correctly by guessing? The SAT used to penalize wrong answers by subtracting 1/4 a point from each incorrect answer. If each question on the SAT has 5 answer choices only one of which is correct, what is the expected number of points awarded by guessing on 40 questions?

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