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i need the answer ?? A multiple choice exam consists of 40 questions, each with five possible answers. If a student guesses randomly on each

i need the answer ??

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A multiple choice exam consists of 40 questions, each with five possible answers. If a student guesses randomly on each question, what are the following probabilities? a) The student answers at least 20 questions correctly. b) The student Jinswers at least 32 questions correctly

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