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If there are four possible answers to a question, then a guessed answer would have a probability of 1 in 4. If there are six questions, then the mean number of correct answers would be six times 1 in 4, or 1.5
In a science test, Jamie solved 42 correct answers out of 60. What is the percentage of correct questions? THIS IS NOT THE ANSWER THIS IS THE WORD PROBLOM
The probability that she gets exactly 3 right is 8C3*(1/3)3*(2/3)5 = 0.2731 approx.
5 incorrect answers and 15 correct answers
35%