Question: The probability that a grader will make a marking error on any particular question of a multiple-choice exam is .1. If there are ten questions

The probability that a grader will make a marking error on any particular question of a multiple-choice exam is .1. If there are ten questions and questions are marked independently, what is the probability that no errors are made? That at least one error is made? If there are n questions and the probability of a marking error is p rather than .1, give expressions for these two probabilities.

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To calculate the probabilities of no errors and at least one error we can use the binomial distribut... View full answer

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