SOLUTION: You are writing a 72 question test. There are 3 choices per question and you guess at each question. What is the probability of passing the test if the pass grade is 50%??

SOLUTION: You are writing a 72 question test. There are 3 choices per question and you guess at each question. What is the probability of passing the test if the pass grade is 50%??

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Question 927460: You are writing a 72 question test. There are 3 choices per question and you guess at each question. What is the probability of passing the test if the pass grade is 50%??
Answer by ewatrrr(24785) (Show Source): You can put this solution on YOUR website!
p(correct) = 1/3, n = 72
P(x ≥ 36) = 1 - (72, 1/3, 35) = 1 - .9975 = .0025
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