A driving exam consists of 28 ​multiple-choice questions. Each of the 28 answers is either right or wrong. Suppose the probability that a student makes fewer than 9 mistakes on the exam is 0.28 and that the probability that a student makes from 9 to 17 ​(inclusive) mistakes is 0.51. Find the probability of each of the following outcomes. a. A student makes more than 17 mistakes b. A student makes 9 or more mistakes c. A student makes at most 17 mistakes d. Which two of these three events are​ complementary?