Twenty subjects volunteer for a study of a new cold medicine. Eight of the volunteers are ages 20-39, 6 are ages 40-59, and 6 are age 60 or older. If 8 volunteers are selected at random, find the following probabilities. a) the probability that all the volunteers selected are ages 20-39 b) the probability that 4 of the volunteers are ages 20-39 and 4 are age 60 or older. c) the probability that 4 of the volunteers are ages 40-59
Twenty subjects volunteer for a study of a new cold medicine. Eight of the volunteers are ages 20-39, 6 are ages 40-59, and 6 are age 60 or older. If 8 volunteers are selected at random, find the following probabilities. a) the probability that all the volunteers selected are ages 20-39 b) the probability that 4 of the volunteers are ages 20-39 and 4 are age 60 or older. c) the probability that 4 of the volunteers are ages 40-59
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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Twenty subjects volunteer for a study of a new cold medicine. Eight of the volunteers are ages 20-39, 6 are ages 40-59, and 6 are age 60 or older. If 8 volunteers are selected at random, find the following probabilities.
a) the
b) the probability that 4 of the volunteers are ages 20-39 and 4 are age 60 or older.
c) the probability that 4 of the volunteers are ages 40-59
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