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Many economics students are unprepared for multiple-choice quiz with 25 problems, and all of their answers are guesses. Each problem has 5 possible answers, and only one of them is correct.

a. Find out the mean and standard deviation for number of correct answers for such students.

b. Would it be unusual for the student to pass by guessing and getting at least 15 correct answers?

Why or why not?

Statistics and Probability, Statistics

  • Category:- Statistics and Probability
  • Reference No.:- M922433

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