SOLUTION: a true/false test has 10 questions each of which has 2 possible answers, only one of which is correct. If you guess on all questions what is the probability that you will answer at
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Question 882762: a true/false test has 10 questions each of which has 2 possible answers, only one of which is correct. If you guess on all questions what is the probability that you will answer at least 6 questions correctly ?
Answer by ewatrrr(24785) (Show Source): You can put this solution on YOUR website!
p(correct) = .5, n = 10
P(x ≥ 6) = 1 - P(x ≤ 5) = 1 - binomcdf(10, .5, 5)
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