Question: A test-scoring machine is known to record an incorrect grade on 5% of the exams it grades. Use the appropriate method to find the probability

A test-scoring machine is known to record an incorrect grade on 5% of the exams it grades.

Use the appropriate method to find the probability that the machine records the following:

a. Exactly 3 wrong grades in a set of 5 exams

b. No more than 3 wrong grades in a set of 5 exams

c. No more than 3 wrong grades in a set of 15 exams

d. No more than 3 wrong grades in a set of 150 exams

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