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OpenStudy (anonymous):
On a true-false test with three questions, what is the probability of guessing the answers to exactly two questions correctly? a) 2/3 b) 3/8 c) 1/2 d) 5/8 e) 3/4 Please clearly and deeply explain to me.
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OpenStudy (anonymous):
There are 3 ways to arrange your 2 wins, and 1/2 chance of winning or losing each. (1/2)^3*3=3/8
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