Question 857278: a student takes an exam containing 10 multiple choice questions. The probability of choosing a correct answer by knowledgeable guessing is 0.2 At least 6 correct answers are required to pass. If a student makes knowledgeable guesses, what is the probability that he will fail?
Answer by ewatrrr(24785)   (Show Source):
You can put this solution on YOUR website!
Hi,
p(guessing correctly) = .2, n = 10
P(x < 6) = 1 - binomcdf(10, .2, 5) = .9672 |TI syntax is 1 – binomcdf(n, p, largest x-value)
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