SOLUTION: A multiple choice test given with 100 questions and 5 answers per question. What is the probability of getting 60% or higher if the another was guessed? How do you calculate P(x&#
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Question 1044276: A multiple choice test given with 100 questions and 5 answers per question. What is the probability of getting 60% or higher if the another was guessed? How do you calculate P(x≥60)? Answer by rothauserc(4718) (Show Source):
You can put this solution on YOUR website! Use the binary probability formula
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if the answer is guessed, then
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p = 0.20, q = 0.80, n = 100
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You sum the probabilities for r = 0 to 59 and subtract the total from 1
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P(X > or = 60) < 0.000001
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