   Chapter 14.4, Problem 23E ### Algebra and Trigonometry (MindTap ...

4th Edition
James Stewart + 2 others
ISBN: 9781305071742

#### Solutions

Chapter
Section ### Algebra and Trigonometry (MindTap ...

4th Edition
James Stewart + 2 others
ISBN: 9781305071742
Textbook Problem

# APPLICATIONExpected Number A student goes to swim practice several times a week. In any given week the probability that he swims three times is 0.30 , two times is 0.45 , one time is 0.15 , and no times is 0.10 . Find the expected number of times the student goes to practice in any given week.

To determine

The expected number of times the student goes to practice.

Explanation

Given:

The probability that the student swims in a week is three times is 0.30, two times is 0.45, one time is 0.15, and no times is 0.10.

Approach:

The expected value is given as,

E=a1p1+a2p2++anpn ...(1)

Here, a1,a2,,an is the number of times student goes for swim practice and p1,p2,,pn is the probability.

Calculation:

Calculate the expected number.

Substitute 0.30 for p1, 0.45 for p2, 0

### Still sussing out bartleby?

Check out a sample textbook solution.

See a sample solution

#### The Solution to Your Study Problems

Bartleby provides explanations to thousands of textbook problems written by our experts, many with advanced degrees!

Get Started 