STAT TECH IN BUSINESS & ECON AC
18th Edition
ISBN: 9781264731657
Author: Lind
Publisher: MCG
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Chapter 14, Problem 9E
The manager of High Point Sofa and Chair, a large furniture manufacturer located in North Carolina, is studying the job performance ratings of a sample of 15 electrical repairmen employed by the company. An aptitude test is required by the human resources department to become an electrical repairman. The manager was able to get the score for each repairman in the sample. In addition, he determined which of the repairmen were union members (code = 1) and which were not (code = 0). The sample information is reported below.
- a. Use a statistical software package to develop a multiple regression equation using the job performance score as the dependent variable and aptitude test score and union membership as independent variables.
- b. Comment on the regression equation. Be sure to include the coefficient of determination and the effect of union membership. Are these two variables effective in explaining the variation in job performance?
- c. Conduct a test of hypothesis to determine if union membership should be included as an independent variable.
- d. Repeat the analysis considering possible interaction terms.
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The manager of High Point Sofa and Chair, a large furniture manufacturer located in North Carolina, is studying the job performance ratings of a sample of 15 electrical repairmen employed by the company. An aptitude test is required by the human resources department to become an electrical repairman. The manager was able to get the score for each repairman in the sample. In addition, he determined which of the repairmen were union members (code = 1) and which were not (code = 0). The sample information is reported below.
Worker
Job Performance Score
Aptitude Test Score
Union Membership
Abbott
58
5
0
Anderson
53
4
0
Bender
33
10
0
Bush
97
10
0
Center
36
2
0
Coombs
83
7
0
Eckstine
67
6
0
Gloss
84
9
0
Herd
98
9
1
Householder
45
2
1
Lori
97
8
1
Lindstrom
90
6
1
Mason
96
7
1
Pierse
66
3
1
Rohde
82
6
1
Click here for the Excel Data File.
a-1. Use a statistical…
There are 10 males and 18 females in the Data Management class. How many different committees of 5 students can be formed if there must be at least 2 males?
A biologist is studying the composition of birds on a lake and counts 61 ducks, 17
geese, 11 cranes, 15 swans, and 6 herons. From previous studies performed around
the same time of the year, she expects 50% of the birds to be ducks, 23% to be
geese, 12% to be cranes, 10% to be swans, and 5% to be herons. What are the
expected and observed counts? Select one.
Expected = 55 ducks, 25 geese, 13 cranes, 11 swans, and 6 herons
Observed = 61 ducks, 17 geese, 11 cranes, 15 swans, and 6 herons
Expected = 61 ducks, 17 geese, 11 cranes, 15 swans, and 6 herons
Observed
55 ducks, 25 geese, 13 cranes, 11 swans, and 6 herons
%3D
Expected = 55 ducks, 25 geese, 13 cranes, 11 swans, and 6 herons
Observed = 55 ducks, 25 geese, 13 cranes, 11 swans, and 6 herons
%3D
%3D
Expected = 61 ducks, 17 geese, 11 cranes, 15 swans, and 6 herons
Observed = 61 ducks, 17 geese, 11 cranes, 15 swans, and 6 herons
Chapter 14 Solutions
STAT TECH IN BUSINESS & ECON AC
Ch. 14 - There are many restaurants in northeastern South...Ch. 14 - Prob. 1ECh. 14 - Thompson Photo Works purchased several new, highly...Ch. 14 - A consulting group was hired by the Human...Ch. 14 - Cellulon, a manufacturer of home insulation, wants...Ch. 14 - Refer to Self-Review 141 on the subject of...Ch. 14 - Prob. 5ECh. 14 - Prob. 6ECh. 14 - Prob. 3SRCh. 14 - Given the following regression output, answer the...
Ch. 14 - The following regression output was obtained from...Ch. 14 - A study by the American Realtors Association...Ch. 14 - The manager of High Point Sofa and Chair, a large...Ch. 14 - Prob. 10ECh. 14 - Prob. 11ECh. 14 - A real estate developer wishes to study the...Ch. 14 - Prob. 13CECh. 14 - Prob. 14CECh. 14 - Prob. 15CECh. 14 - Prob. 16CECh. 14 - The district manager of Jasons, a large discount...Ch. 14 - Suppose that the sales manager of a large...Ch. 14 - The administrator of a new paralegal program at...Ch. 14 - Prob. 20CECh. 14 - Prob. 21CECh. 14 - A regional planner is studying the demographics of...Ch. 14 - Great Plains Distributors, Inc. sells roofing and...Ch. 14 - Prob. 24CECh. 14 - Prob. 25CECh. 14 - Prob. 26CECh. 14 - Prob. 28CECh. 14 - Prob. 29CECh. 14 - The director of special events for Sun City...Ch. 14 - Prob. 31CECh. 14 - Prob. 32CECh. 14 - Prob. 33DACh. 14 - Prob. 34DACh. 14 - Prob. 35DACh. 14 - Prob. 1PCh. 14 - Quick-print firms in a large downtown business...Ch. 14 - The following ANOVA output is given. a. Compute...Ch. 14 - Prob. 1CCh. 14 - Prob. 2CCh. 14 - Prob. 3CCh. 14 - In a scatter diagram, the dependent variable is...Ch. 14 - What level of measurement is required to compute...Ch. 14 - If there is no correlation between two variables,...Ch. 14 - Which of the following values indicates the...Ch. 14 - Under what conditions will the coefficient of...Ch. 14 - Given the following regression equation, = 7 ...Ch. 14 - Given the following regression equation, = 7 ...Ch. 14 - Given the following regression equation, = 7 ...Ch. 14 - Prob. 1.9PTCh. 14 - In a multiple regression equation, what is the...Ch. 14 - Prob. 1.11PTCh. 14 - Prob. 1.12PTCh. 14 - For a dummy variable, such as gender, how many...Ch. 14 - What is the term given to a table that shows all...Ch. 14 - If there is a linear relationship between the...Ch. 14 - Given the following regression analysis output: a....Ch. 14 - Given the following regression analysis output. a....
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