Chapter 12.7, Problem 3CYU

a.

To determine

To simulate Marlene’s correctly answering a question.

Answer to Problem 3CYU

A spinner with five equally sized spaces, four of which are colored blue can be used to stimulate her correctly answering a question. If the spinner lands on blue, it represents a correctly answered question.

Explanation of Solution

Given information:

The given statement is:

“On a true-false test, Marlene answered $\text{16}$ out of $\text{20}$ questions correctly by guessing randomly.”

A spinner with five equally sized spaces, four of which are colored blue can be used to stimulate her correctly answering a question. If the spinner lands on blue, it represents a correctly answered question.

b.

To determine

To simulate Marlene’s next $\text{20}$ questions.

Answer to Problem 3CYU

A spinner with five equally sized spaces, four of which are colored blue and one is colored red can be used to stimulate her next $\text{20}$ questions. If the spinner lands on blue, it represents she will correctly answer the question and if it lands on red, it represents that she will answer the question wrongly.

Explanation of Solution

Given information:

The given statement is:

“On a true-false test, Marlene answered $\text{16}$ out of $\text{20}$ questions correctly by guessing randomly.”

A spinner with five equally sized spaces, four of which are colored blue and one is colored red can be used to stimulate her next $\text{20}$ questions. If the spinner lands on blue, it represents she will correctly answer thequestion and if it lands on red, it represents that she will answer the question wrongly.