Introduction to Business Statistics
Introduction to Business Statistics
7th Edition
ISBN: 9781111792374
Author: WEIERS
Publisher: Cengage Learning
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Chapter 7.4, Problem 7.41E

In a certain binomial distribution, π = 0.25 and n = 40 . In using the normal approximation,

a. What are the mean and standard deviation of the corresponding normal distribution?

b. If x = the number of “successes” among the 40 observations, determine the following: P ( x = 8 ) ,
P ( 12 x 16 ) , P ( 10 x 12 ) , P ( x 14 ) .

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Chapter 7 Solutions

Introduction to Business Statistics

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