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Solution: In Exercises, use either technology or the

Elementary Statistics | 12th Edition | ISBN: 9780321836960 | Authors: Mario F. Triola ISBN: 9780321836960 18

Solution for problem 32BSC Chapter 5.3

Elementary Statistics | 12th Edition

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Elementary Statistics | 12th Edition | ISBN: 9780321836960 | Authors: Mario F. Triola

Elementary Statistics | 12th Edition

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Problem 32BSC

In Exercises 29–32, use either technology or the Binomial Probability table (Table A­1). 

Tainted Currency Based on the American Chemical Society, there is a 0.9 probability that in the United States, a randomly selected dollar bill is tainted with traces of cocaine. Assume that eight dollar bills are randomly selected.

a. Find the probability that all of them have traces of cocaine.

b. Find the probability that exactly seven of them have traces of cocaine.

c. Find the probability that the number of dollar billls with traces of cocaine is seven or more.

d. If we randomly select eight dollar bills, is seven an unusually high number for those with traces of cocaine?

Step-by-Step Solution:
Step 1 of 3

Solution  32BSC

= 0.813

Step 2 of 3

Chapter 5.3, Problem 32BSC is Solved
Step 3 of 3

Textbook: Elementary Statistics
Edition: 12
Author: Mario F. Triola
ISBN: 9780321836960

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Solution: In Exercises, use either technology or the