On a multiple choice test with 15 questions, each question has four possible answers, one of which is correct. For students who guess at all answers, find the variance for the number of correct answers. Round to the nearest tenth.
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Home » Mathematics » On a multiple choice test with 15 questions, each question has four possible answers, one of which is correct. For students who guess at all answers, find the variance for the number of correct answers. Round to the nearest tenth.