Answered: In Case Study 9.1, we discussed the…

Name: In Case Study 9.1, we discussed the National Survey for Professional,
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Description: In Case Study 9.1, we discussed the National Survey for Professional, Administrative, Technical, and Clerical Pay, which is conducted annually to determine whether federal pay scales are commensurate with private sector salaries. Recall that governm

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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In Case Study 9.1, we discussed the National Survey for Professional, Administrative, Technical, and Clerical Pay, which is conducted annually to determine whether federal pay scales are commensurate with private sector salaries. Recall that government and private workers in the study are matched as closely as possible before the salaries are compared. Suppose that the table shows the annual salaries for twelve pairs of individuals in the sample matched on job level and experience. Use these data to construct a 99% confidence interval for the difference between the mean salaries of the private and government sectors.

PAIR	PRIVATE	GOV’T	PAIR	PRIVATE	GOV’T
1	$12,500	$11,700	7	$15,800	$14,500
2	22,300	20,900	8	17,500	17,900
3	14,500	14,800	9	23,300	21,400
4	32,300	29,900	10	42,100	43,200
5	20,800	21,500	11	16,800	15,200
6	19,200	18,400	12	14,500	14,200

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