Bri G.
asked • 05/05/15The test Linda took had 120 questions.
How many questions could she have expected to have gotten right if she had guessed all of them?
What is the probability of getting at least thirty questions right by guessing all of them?
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1 Expert Answer
IF it's a true false test, she'd expect to get 60 questions right.
IF multiple choice with 4 choices, she'd get 1/4 or 30 questions right on average
IF multiple choce with 4 choices, she'd have a 50% chance of geting 30 or more right
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Jon P.
05/05/15