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Name: A personnel director in a particular state claims that the mean annual
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Description: A personnel director in a particular state claims that the mean annual income is greater in one of the state's counties (county A) than it is in another county (county B). In County A, a random sample of 18 residents has a mean annual income of $

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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A personnel director in a particular state claims that the mean annual income is greater in one of the state's counties (county A) than it is in another county (county B). In County A, a random sample of 18 residents has a mean annual income of $41,900 and a standard deviation of $8600. In County B, a random sample of 8 residents has a mean annual income of $39,100 and a standard deviation of $5900. At a= 0.10, assume the population variances are not equal.

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