Essentials of Business Analytics (MindTap Course List)
2nd Edition
ISBN: 9781305627734
Author: Jeffrey D. Camm, James J. Cochran, Michael J. Fry, Jeffrey W. Ohlmann, David R. Anderson
Publisher: Cengage Learning
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Question
Chapter 7, Problem 10P
a.
To determine
Find an estimated regression equation that can be used to predict the overall score given the scores for comfort, amenities, and in-house dining.
b.
To determine
Perform t-test to determine the significance of each independent variable at 0.01 level of significance.
c.
To determine
Find an estimated regression equation that can be used to predict the overall score after eliminating the non-significant variables.
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9.2 Testing the Mean mu:
Problem 3
(1 point)
Test the claim that the population of sophomore college
students has a mean grade point average greater than 2.2.
Sample statistics include n = 71, x = 2.44, and s = 0.9.
Use a significance level of a = 0.01.
The test statistic is
The P-Value is between :
The final conclusion is
< P-value <
A. There is sufficient evidence to support the claim that
the mean grade point average is greater than 2.2.
○ B. There is not sufficient evidence to support the claim
that the mean grade point average is greater than 2.2.
Note: You can earn partial credit on this problem.
Note: You are in the Reduced Scoring Period. All work counts for
50% of the original.
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Chapter 7 Solutions
Essentials of Business Analytics (MindTap Course List)
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Ch. 7 - The American Association of Individual Investors...Ch. 7 - The National Football League (NFL) records a...Ch. 7 - Johnson Filtration. Inc., provides maintenance...Ch. 7 - A study investigated the relationship between...Ch. 7 - The U.S. Department of Energys Fuel Economy Guide...Ch. 7 - A highway department is studying the relationship...Ch. 7 - A sample containing years to maturity and...Ch. 7 - In 2011, home prices and mortgage rates fell so...Ch. 7 - A recent 10-year study conducted by a research...Ch. 7 - The Scholastic Aptitude Test (or SAT) is a...Ch. 7 - Consider again the example introduced in Section...Ch. 7 - Alumni donations are an important source of...
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