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A preliminary study of hourly wages paid to unskilled employees in three metropolitan areas was conducted. Seven employees were included from Area A, 9 from Area B, and 12 from Area C. The test statistic was computed to be 4.91. What can we conclude at the 0.05 level? Select one: a. Mean hourly wages of unskilled employees of all areas are equal. b. Mean hourly wages in at least two metropolitan areas are different. c. More degrees of freedom are needed. d. None of these is correct.

A preliminary study of hourly wages paid to unskilled employees in three metropolitan areas was conducted. Seven employees were included from Area A, 9 from Area B, and 12 from Area C. The test statistic was computed to be 4.91. What can we conclude at the 0.05 level? Select one: a. Mean hourly wages of unskilled employees of all areas are equal. b. Mean hourly wages in at least two metropolitan areas are different. c. More degrees of freedom are needed. d. None of these is correct.

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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A preliminary study of hourly wages paid to unskilled employees in three metropolitan areas was conducted. Seven employees were included from Area A, 9 from Area B, and 12 from Area C. The test statistic was computed to be 4.91. What can we conclude at the 0.05 level? Select one:

a. Mean hourly wages of unskilled employees of all areas are equal.

b. Mean hourly wages in at least two metropolitan areas are different.

c. More degrees of freedom are needed.

d. None of these is correct.

Expert Solution
Step 1

Given:

Number of areas to be tested =3

Employees from area A =7

Employees from area B = 9

Employees from area C =  12

Test -statistic = 4.91

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