Several students are unprepared for a multiple-choice quiz with 10 questions, and all of their answers are guesses. Each question has five possible answers, and only one of them is correct.
A) Find the meanand standard deviationfor the number of correct answers for such students.
B) Would it be unusual for a student to pass by guessing and getting at least 7 correct answers? Why or why not?
This solution calculates a mean, standard deviation and explains guessing probability distributions.