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3. A researcher compared the costs of two cars with similar features made by two manufacturers. For company 1 the mean cost for 44 cars was ₁ = $37,950. Assume the population standard deviation for company 1 is $2520. For company 2 the mean cost for 37 cars was T₂ = $35, 800. Assume the population standard deviation for company 2 is $2875. At a = 0.05 can the researcher support the claim that the difference between the mean costs for the cars is more than $1000 for the two manufacturers? (Note: Before you attempt this problem, please review the supplementary document posted in learning module 3 of your Blackboard course, "Testing Nonzero Differences in the Means".)

3. A researcher compared the costs of two cars with similar features made by two manufacturers. For company 1 the mean cost for 44 cars was ₁ = $37,950. Assume the population standard deviation for company 1 is $2520. For company 2 the mean cost for 37 cars was T₂ = $35, 800. Assume the population standard deviation for company 2 is $2875. At a = 0.05 can the researcher support the claim that the difference between the mean costs for the cars is more than $1000 for the two manufacturers? (Note: Before you attempt this problem, please review the supplementary document posted in learning module 3 of your Blackboard course, "Testing Nonzero Differences in the Means".)

MATLAB: An Introduction with Applications
MATLAB: An Introduction with Applications
6th Edition
ISBN:9781119256830
Author:Amos Gilat
Publisher:Amos Gilat
Chapter1: Starting With Matlab
Section: Chapter Questions
Problem 1P
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3. A researcher compared the costs of two cars with similar features made by two manufacturers. For company 1 the mean cost for 44 cars was ₁ = $37,950. Assume the population standard deviation for company 1 is $2520. For company 2 the mean cost for 37 cars was T₂ = $35, 800. Assume the population standard deviation for company 2 is $2875. At a = 0.05 can the researcher support the claim that the difference between the mean costs for the cars is more than $1000 for the two manufacturers? (Note: Before you attempt this problem, please review the supplementary document posted in learning module 3 of your Blackboard course, "Testing Nonzero Differences in the Means".)
Transcribed Image Text:3. A researcher compared the costs of two cars with similar features made by two manufacturers. For company 1 the mean cost for 44 cars was ₁ = $37,950. Assume the population standard deviation for company 1 is $2520. For company 2 the mean cost for 37 cars was T₂ = $35, 800. Assume the population standard deviation for company 2 is $2875. At a = 0.05 can the researcher support the claim that the difference between the mean costs for the cars is more than $1000 for the two manufacturers? (Note: Before you attempt this problem, please review the supplementary document posted in learning module 3 of your Blackboard course, "Testing Nonzero Differences in the Means".)
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