SOLUTION: A student is taking a multiple-choice exam with 16 questions. Each question has five alternatives. If the student guesses on 12 of the questions, what is the probability she will g

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Question 918181: A student is taking a multiple-choice exam with 16 questions. Each question has five alternatives. If the student guesses on 12 of the questions, what is the probability she will guess at least 8 [of those questions] correct? Assume all of the alternatives are equally likely for each question on which the student guesses.
Answer by ewatrrr(24785) About Me  (Show Source):
You can put this solution on YOUR website!
p(correct) = .2 , n = 16
P( x ≥ 8) = 1 - binomcdf(16, .2, 7)