# A driving exam consists of 30 multiple-choice questions. Each of the answers is either right or wrong.

## Question:

A driving exam consists of 30 multiple-choice questions. Each of the answers is either right or wrong. Suppose that the probability of making fewer than 7 mistakes is 0.23 and the probability of making from 7 to 15 mistakes is 0.41. Find the probability of making:

a. 16 or more mistakes

b. 7 or more mistakes

c. At most 15 mistakes

d. Which two of these three events are complementary? Explain.

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**Related Book For**

## Introductory Statistics Exploring The World Through Data

**ISBN:** 9780321978271

2nd Edition

**Authors:** Robert Gould, Colleen Ryan