Essentials of Statistics for The Behavioral Sciences (MindTap Course List)
9th Edition
ISBN: 9781337098120
Author: Frederick J Gravetter, Larry B. Wallnau, Lori-Ann B. Forzano
Publisher: Cengage Learning
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Chapter 15, Problem 16P
Gender differences in dream content are well documented (see Winget & Kramer, 1979). Suppose a researcher studies aggression content in the dreams of men and women. Each participant reports his or her most recent dream. Then each dream is judged by a panel of experts to have low, medium, or high aggression content. The observed frequencies are shown in the following matrix:
Is there a relationship between gender and the aggression content of dreams? Test with α =.01.
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The following matrix shows the bivariate correlations for houses with garages.
Baths
Beds
Sqft
Age
Price
Baths
1
Beds
0.591
1
Sqft
0.696
0.626
1
Age
-0.427
-0.133
-0.069
1
Price
0.643
0.374
0.767
-0.099
1
Baths: # of bathrooms in the house
Beds: # of bedrooms in the house
Sqft: # of square feet in the house
Age: age of the house in years
Price: selling price of house
Answer the following:
a) Do older houses with garages sell for lower or higher prices than newer houses with garages on average?
Are older houses with garages smaller or larger than newer houses with garages on average?
b) Is the correlation between baths and age weaker or stronger than correlation between beds and price?
c) Is the correlation between age and sqft weaker or stronger than the correlation between age and price?
1
Professor Yema conducted a research to determine factors that influence environmental attitude. Table 1 below is a matrix of Pearson’s r correlation coefficients for the following variables used in the study: Environmental attitude (En), level of education (Le), and income (In).
Table 1: Factors that influence environmental attitude
____________________________________________________________________
Variable En Le In
____________________________________________________________________
Environmental attitude (En) 1.0
Level of education (Le) 0.6** 1.0
Income (In) –0.3* 0.9*** 1.0
____________________________________________________________________
***Correlation is…
The following is the correlation matrix.
SALES
GENDER
OWNHOME
MARRIED
INCOME
CHILDREN
CATALOGS
SALES
1.0000
GENDER
0.1950
1.0000
OWNHOME
0.3480
0.0844
1.0000
MARRIED
0.4711
0.1161
0.2640
1.0000
INCOME
0.6845
0.2583
0.4494
0.6652
1.0000
CHILDREN
-0.2248
-0.1055
-0.0323
0.0098
0.0479
1.0000
CATALOGS
0.4664
0.0874
0.0931
0.1371
0.1779
-0.1135
1.0000
The regression equation is: estimated SALES = 247.0745 + 78.6075*CATALOGS
question:
What is the slope coefficient for the regression equation?
Chapter 15 Solutions
Essentials of Statistics for The Behavioral Sciences (MindTap Course List)
Ch. 15.1 - Which of the following is a characteristic of...Ch. 15.1 - Which of the following accurately describes the...Ch. 15.1 - A researcher uses a sample of n = 60 participants...Ch. 15.2 - Prob. 1LCCh. 15.2 - Prob. 2LCCh. 15.2 - A researcher uses a sample of 20 college...Ch. 15.3 - If a chi-square test for independence has df 3,...Ch. 15.3 - Prob. 2LCCh. 15.3 - Prob. 3LCCh. 15.4 - Prob. 1LC
Ch. 15.4 - A researcher obtains X2 = 4.0 for a test for...Ch. 15.4 - Under what circumstances should the chi-square...Ch. 15.5 - Prob. 1LCCh. 15.5 - Prob. 2LCCh. 15 - Prob. 1PCh. 15 - The student population at the state college...Ch. 15 - A developmental psychologist would like to deter...Ch. 15 - Data from the Department of Motor Vehicles...Ch. 15 - A psychologist examining art appreciation selected...Ch. 15 - A professor in the psychology department would...Ch. 15 - Automobile insurance is much more expensive for...Ch. 15 - A communications company has developed three new...Ch. 15 - Prob. 9PCh. 15 - Earlier in the chapter, we introduced the...Ch. 15 - Liu el al. (2015) recently reported the results of...Ch. 15 - Many businesses use some type of customer loyalty...Ch. 15 - In a classic study, Loftus and Palmer (1974)...Ch. 15 - In a study investigating freshman weight pain, the...Ch. 15 - Research results suggest that IQ scores for boys...Ch. 15 - Gender differences in dream content are well...Ch. 15 - Many parents allow their underage children to...Ch. 15 - A recent study indicates that people tend to...Ch. 15 - Research indicates that people who volunteer to...Ch. 15 - Research has demonstrated strong gender...
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