Algebra 2 (1st Edition)

Published by McDougal Littell

Chapter 11 Data Analysis and Statistics - Extension - Approximate Binomial Distributions and Test Hypotheses - Practice - Page 765: 6

3.25

Work Step by Step

Using the given equations, we find: $$\bar{x}=np=(66)(.2)=13.2$$ AND $$\sigma = \sqrt{np(1-p)}= \sqrt{13.2(1-.2)}=3.25$$

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