   Chapter 14.2, Problem 61E ### 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

# APPLICATIONSBalls in a Jar Jar A contains three red balls and four white balls. Jar B contains five red balls and two white balls. Which one of the following ways of randomly selecting balls gives the greatest probability of drawing two red balls?(i) Draw two balls from Jar B.(ii) Draw one ball from each Jar.(iii) Put all the balls in one Jar, and then draw two balls.

To determine

To find:

The greatest probability of drawing two red balls.

Explanation

Given:

Jar A contains 3 red balls and 4 white balls. Jar B contains 5 red balls and 2 white balls.

Approach:

The probability of an event E of a sample space S is written as P(E) and is given by,

P(E)=n(E)n(S)=numberoffavorableoutcomesnumberoftotaloutcomes(1)

The number of combinations of selecting r objects from a total of n objects is

C(n,r)=n!r!(nr)!(2)

Calculation:

For case (i),

Event E1=twoballsfromjarB.

n(E1)=C(5,2)=5!2!(52)!=5×4×3!2!3!=10

n(S)=C(7,2)=7!2!(72)!=7×6×5!2!5!=21

P(E1)=1021=0.4761

For case (ii),

Event E2=oneballfromeachjar

### 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 