30) A parent-teacher committee consisting of 4 people is to be formed from 20 parents and 5 teachers. Assuming random selection, find the probability that the committee will consist of these people: a) All teachers b) 2 teachers and 2 parents c) All parents d) 1 teacher and 3 parents

30) A parent-teacher committee consisting of 4 people is to be formed from 20 parents and 5 teachers. Assuming random selection, find the probability that the committee will consist of these people: a) All teachers b) 2 teachers and 2 parents c) All parents d) 1 teacher and 3 parents

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...

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Question

30.) A parent-teacher committec consisting of 4 people is to be formed from 20 parents and 5 teachers. Assum random selection, Find the probability that the committee will consist of these people: a.) All teachers b.) 2 teachers and 2 parents c.) All parents d.) 1 teacher and 3 parents

30) A parent-teacher committee consisting of 4 people is to be formed from 20 parents and 5 teachers. Assuming random selection, find the probability that the committee will consist of these people:

a) All teachers
b) 2 teachers and 2 parents
c) All parents
d) 1 teacher and 3 parents

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