There are 3 boys and 2 girls at a party. Three party-goers are selected at random to go on a root-beer run. Let W denote the number of girls in the group of three that go on the root-beer run. Compute the expected number of girls who go on the root-beer run, E[W].
There are 3 boys and 2 girls at a party. Three party-goers are selected at random to go on a root-beer run. Let W denote the number of girls in the group of three that go on the root-beer run. Compute the expected number of girls who go on the root-beer run, E[W].
Glencoe Algebra 1, Student Edition, 9780079039897, 0079039898, 2018
18th Edition
ISBN:9780079039897
Author:Carter
Publisher:Carter
Chapter0: Preparing For Algebra
Section: Chapter Questions
Problem 55PRT
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Question
![There are 3 boys and 2 girls at a party.
Three party-goers are selected at random to
go on a root-beer run. Let W denote the
number of girls in the group of three that go
on the root-beer run.
Compute the expected number of girls who
go on the root-beer run, E[W].](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2Ff72dbd1a-89a3-4722-b0fb-ff5be11bbf8a%2Fc82b3f9b-3895-4ea5-b428-9b77b7d559f0%2Fbs0ksub.bmp&w=3840&q=75)
Transcribed Image Text:There are 3 boys and 2 girls at a party.
Three party-goers are selected at random to
go on a root-beer run. Let W denote the
number of girls in the group of three that go
on the root-beer run.
Compute the expected number of girls who
go on the root-beer run, E[W].
Expert Solution
![](/static/compass_v2/shared-icons/check-mark.png)
Step 1
There are 3 boys and 2 girls at the party.
Three party-goers are selected at random to go on the root beer run.
An event is a number of girls in a group of three that go on the root beer run.
The expected value formula is as follows
The combination formula is as follows.
The factorial is as follows.
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