The mean number of contracts that consulting firms receive with the Department of Human Servicesis 0.4 for any given year. Ecosystems, Inc., a heavy contributor to political candidates, receives threecontracts in one year.a. What is the probability that Ecosystems would receive three or more contracts in a singleyear by chance?b. What is the probability that Ecosystems will receive six contracts in 2 years? Using the poisson distribution.

College Algebra
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ISBN:9781337282291
Author:Ron Larson
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Chapter8: Sequences, Series,and Probability
Section8.7: Probability
Problem 11ECP: A manufacturer has determined that a machine averages one faulty unit for every 500 it produces....
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The mean number of contracts that consulting firms receive with the Department of Human Services
is 0.4 for any given year. Ecosystems, Inc., a heavy contributor to political candidates, receives three
contracts in one year.
a. What is the probability that Ecosystems would receive three or more contracts in a single
year by chance?
b. What is the probability that Ecosystems will receive six contracts in 2 years?

Using the poisson distribution.

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