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School Newspaper Staff A school newspaper staff is
Chapter 5, Problem 17E(choose chapter or problem)
Problem 17E
School Newspaper Staff A school newspaper staff is comprised of 5 seniors, 4 juniors, 5 sophomores, and 7 freshmen. If 4 staff members are chosen at random for a publicity photo, what is the probability that there will be 1 student from each class?
Questions & Answers
QUESTION:
Problem 17E
School Newspaper Staff A school newspaper staff is comprised of 5 seniors, 4 juniors, 5 sophomores, and 7 freshmen. If 4 staff members are chosen at random for a publicity photo, what is the probability that there will be 1 student from each class?
ANSWER:
Solution 17E
Step1 of 2:
The number of seniors in a school newspaper staff is comprised = 5.
The number of juniors in a school newspaper staff is comprised = 4.
The number of sophomores in a school newspaper staff is comprised = 5.
The number of freshmen in a school newspaper staff is comprised = 7.
The number of staff chosen at random = 4.
The total number of staffs = 5+4+5+7
= 21
We need to find the probability that there will be 1 student from each class.