According to the USA Today (March 18, 1997) of 5 million workers in the general workforce, 6.8% tested positive for drugs. Of those testing positive, 22.5% were cocaine users and 54.4% marijuana users. Tested worker returns to work after testing. What is the probability that of twelve workers testing positive, 5 marijuana users, 4 cocaine users, and 3 users of other drugs?

According to the USA Today (March 18, 1997) of 5 million workers in the general workforce, 6.8% tested positive for drugs. Of those testing positive, 22.5% were cocaine users and 54.4% marijuana users. Tested worker returns to work after testing. What is the probability that of twelve workers testing positive, 5 marijuana users, 4 cocaine users, and 3 users of other drugs?

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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