A committee of three people is selected at random from a set consisting of five teachers, three parents of students, and four alumni. 1)Find probability the commitee consists of all teachers. 2)Find probability the commitee has no teachers.
A committee of three people is selected at random from a set consisting of five teachers, three parents of students, and four alumni. 1)Find probability the commitee consists of all teachers. 2)Find probability the commitee has no teachers.
A First Course in Probability (10th Edition)
10th Edition
ISBN:9780134753119
Author:Sheldon Ross
Publisher:Sheldon Ross
Chapter1: Combinatorial Analysis
Section: Chapter Questions
Problem 1.1P: a. How many different 7-place license plates are possible if the first 2 places are for letters and...
Related questions
Question
A committee of three people is selected at random from a set consisting of five teachers, three parents of students, and four alumni.
1)Find
2)Find probability the commitee has no teachers.
Expert Solution
Step 1
According to the combination rule, if r distinct items are to be chosen from n items without replacement, in such a way that the order of selection does not matter, then the selection can be made in (nCr) = n! / [r! (n – r)!] = [n (n – 1) … (n – r + 1)] / r! ways.
Trending now
This is a popular solution!
Step by step
Solved in 3 steps with 2 images
Knowledge Booster
Learn more about
Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, probability and related others by exploring similar questions and additional content below.Recommended textbooks for you
A First Course in Probability (10th Edition)
Probability
ISBN:
9780134753119
Author:
Sheldon Ross
Publisher:
PEARSON
A First Course in Probability (10th Edition)
Probability
ISBN:
9780134753119
Author:
Sheldon Ross
Publisher:
PEARSON