Mathematics, 10.02.2021 19:40 damilysgonzalez2

Mrs. Meany routinely gives quizzes containing 70 multiple choice questions with four possible answers (1 in 4 chance of guessing correctly). Occasionally the just hands the students an answer sheet without giving them the questions and asks them to guess the correct answers. x = number of correct answers on such an exam Find the mean for this binomial variable x.

Find the standard deviation for this binomial variable x

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Mrs. Meany routinely gives quizzes containing 70 multiple choice questions with four possible answer...