Develop an interval estimate for the difference between the average yearly incomes of the marketing managers in the East and West Use a= 05. At 95% confidence, use the p value approach and test to determine if the average b. yearly income of marketing managers in the East is significantly ditfferent from the. West

College Algebra (MindTap Course List)
12th Edition
ISBN:9781305652231
Author:R. David Gustafson, Jeff Hughes
Publisher:R. David Gustafson, Jeff Hughes
Chapter4: Polynomial And Rational Functions
Section4.2: Polynomial Functions
Problem 96E: What is the purpose of the Intermediate Value Theorem?
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In order to estimate the difference between the yearly incomes of marketing managers in the East and West of the United States, the following information was gathered:
East
West
n1= 40
I1=72 (in $1000s) 2= 78 (in $1000s)
51 =6 (in $1000s)
n2= 45
s2 = 8 (in $1000s)
Develop an interval estimate for the difference between the average yearly incomes of
the marketing managers in the East and West. Use a = .05.
At 95% confidence, use the p-value approach and test to determine if the average
a.
b.
yearly income of marketing managers in the East is significantly different from the
West
Transcribed Image Text:In order to estimate the difference between the yearly incomes of marketing managers in the East and West of the United States, the following information was gathered: East West n1= 40 I1=72 (in $1000s) 2= 78 (in $1000s) 51 =6 (in $1000s) n2= 45 s2 = 8 (in $1000s) Develop an interval estimate for the difference between the average yearly incomes of the marketing managers in the East and West. Use a = .05. At 95% confidence, use the p-value approach and test to determine if the average a. b. yearly income of marketing managers in the East is significantly different from the West
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