SOLUTION: Test consists of 10 multiple choice questions, each with 5 possible answers; one of which is correct. To pass the test, student must get 60% or better. If student randomly guesse
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Question 266454: Test consists of 10 multiple choice questions, each with 5 possible answers; one of which is correct. To pass the test, student must get 60% or better. If student randomly guesses, what is probability that he will pass test? Answer by drk(1908) (Show Source):
You can put this solution on YOUR website! This is a combination problem. We want 6 out of 10 correct. The probability of choosing the correct answer is 1/5.
we use the following
(10C6)(1/5)^6(1/6)^4 and get
~ 0.000021504
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