Question 911590: A student takes an exam containing 14 multiple choice questions. The probability of choosing a correct answer by knowledgeable guessing is 0.3. At least 9 correct answers are required ti pass. If the 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! p(correct) =.3 , n = 14
P(x ≥ 9) = 1 - P(x ≤ 8) = 1 - binomcdf(14,.3,8)
TI syntax is binomcdf(n, p, largest x-value) for binomial ≤ cumulative probability
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