# Chapter 9, Counting and Probability - Section 9.3 - Binomial Probability - 9.3 Exercises - Page 675: 4

$.3087$

#### Work Step by Step

Probability of success: $.7$ Probability of failure: $(1-.7)=.3$ The probability of three successes out of five attempts (implies two failures) is $(.7)^{3}\times (.3)^{2}\times 5C3=.3087$

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