A questionnaire is sent to 7 first year students, 3 second year students, 8 third year students and 6 fourth year students. If only three questionnaires are returned, what is the probability that at least two of them are returned by students from the same year? You may assume that each student is equally likely to return the questionnaire.
A questionnaire is sent to 7 first year students, 3 second year students, 8 third year students and 6 fourth year students. If only three questionnaires are returned, what is the probability that at least two of them are returned by students from the same year? You may assume that each student is equally likely to return the questionnaire.
Holt Mcdougal Larson Pre-algebra: Student Edition 2012
1st Edition
ISBN:9780547587776
Author:HOLT MCDOUGAL
Publisher:HOLT MCDOUGAL
Chapter11: Data Analysis And Probability
Section11.8: Probabilities Of Disjoint And Overlapping Events
Problem 2C
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A questionnaire is sent to 7 first year students, 3 second year students, 8 third year students and 6 fourth year students.
If only three questionnaires are returned, what is the probability that at least two of them are returned by students from the same year?
You may assume that each student is equally likely to return the questionnaire.
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