Introduction to Business Statistics
Introduction to Business Statistics
7th Edition
ISBN: 9781111792374
Author: WEIERS
Publisher: Cengage Learning
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Estimation
A new framework of data analysis where the new statistical methods are used for interpreting the results and analyzing the data is known as estimation in statistics.
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Chapter 8.3, Problem 8.9E

For a random variable that is normally distributed, with μ = 80  and  σ =10 , determine the probability that a simple random sample of 25 items will have a mean that is
a. greater than 78.
b. between 79 and 85.
c. less than 85.

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Introduction to Business Statistics

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