Question 1

What is the degrees of freedom for the explained variation? 
a) 1 
b) 8 
c) 9 
d) none of the above

Accepted Answer

B

Question 2

The p‐value generally is sensitive to sample size, in that if the sample size increases, the p‐value usually will become larger.

Accepted Answer

A) True 
 B)False  False

Question 3

To measure the difference between means or the difference between independent sample proportions, one would probably use which statistical technique? 
a) chi-square test 
b) sign test 
c) F-test 
d) t-test

Accepted Answer

D

Question 4

The greater the p-value, the higher is the researcher's confidence in the research findings.

Accepted Answer

A) True 
 B)False

Question 5

The ANOVA table is a conventional way to present a hypothesis test regarding the difference between several means.

Accepted Answer

A) True 
 B)False

Question 6

The limits of the acceptance region are

Accepted Answer

A) .922, 0.978) 
B) .94, 0.97) 
C) .86, 0.91) 
D) .93, 0.98) 
A) .922, 0.978) 
B) .94, 0.97) 
C) .86, 0.91) 
D) .93, 0.98)

Question 7

A good descriptive statistic of measuring the strength of association is to measure "Rho," which is the proportion of variance accounted for in the sample data.

Accepted Answer

A) True 
 B)False

Question 8

What is the value of rho from these data? 
a) 0.25 
b) 0.333
c) 0.42 
d) 0.5

Accepted Answer

The answer of What is the value of rho from...

Question 9

The hypothesized value of the defect free printers is

Accepted Answer

A) 0.87 
B) 0.13 
C) 0.95 
D) none of the above. 
A) 0.87 
B) 0.13 
C) 0.95 
D) none of the above.

Question 10

When the sample statistic falls within the critical values, it proves that the null hypothesis is true.

Accepted Answer

A) True 
 B)False

Question 11

In a hypothesis test when alpha is pre-specified, the researcher is trying to determine "Is the probability of what has been observed lesser than alpha?" and then decide accordingly.

Accepted Answer

A) True 
 B)False

Question 12

The p-value is independent of the sample size.

Accepted Answer

A) True 
 B)False

Question 13

What was the unexplained variation in this study? 
a) 80 
b) 160 
c) 340
d) 640

Accepted Answer

The answer of What was the unexplained variation in this...

Question 14

The rejection rule is

Accepted Answer

A) reject the null hypothesis in favor of the alternative hypothesis 
B) fail to reject the null and conclude that the product meets specifications. 
C) inadequate sample size and hence conduct a retest. 
D) standard deviation of the sample to be calculated.
Use the following information for questions 12 through 14.
Jack Enterprises Inc.is a laser printer manufacturer.The board of Jack Enterprises wants to see a perceptible improvement in the quality of the laser printers and specify a defect free production rate of 0.95.The quality assurance manager incorporates some
Changes in the assembling process and checks a random sample of 225 printers.She finds that only 87% of the printers are defect free.She wants to test the hypothesis that 95% of the printers manufactured by the company are defect free.The significance level
Has been specified at 0.05. 
A) reject the null hypothesis in favor of the alternative hypothesis 
B) fail to reject the null and conclude that the product meets specifications. 
C) inadequate sample size and hence conduct a retest. 
D) standard deviation of the sample to be calculated.
Use the following information for questions 12 through 14.
Jack Enterprises Inc.is a laser printer manufacturer.The board of Jack Enterprises wants to see a perceptible improvement in the quality of the laser printers and specify a defect free production rate of 0.95.The quality assurance manager incorporates some
Changes in the assembling process and checks a random sample of 225 printers.She finds that only 87% of the printers are defect free.She wants to test the hypothesis that 95% of the printers manufactured by the company are defect free.The significance level
Has been specified at 0.05.

Question 15

An interaction effect means that the impact of a specific treatment will not be the same for each condition of the other treatment in the ANOVA analysis.

Accepted Answer

A) True 
 B)False

Question 16

In an ANOVA test, if the "between-treatment variance" is lesser than the "within-treatment variance," then the null hypothesis can be rejected.

Accepted Answer

A) True 
 B)False

Question 17

In an ANOVA test, "within-treatment variance" corresponds to the variance in the response variable for a given treatment.

Accepted Answer

A) True 
 B)False

Question 18

What F-value do you find from this table? 
a) 0.75 
b) 0.9 
c) 1.0 
d) 1.6

Accepted Answer

The answer of What F-value do you find from this...

Question 19

The p-value can be defined as the largest significance level at which we would accept the null hypothesis.

Accepted Answer

A) True 
 B)False

Question 20

In an ANOVA test, "between-treatment variance" corresponds to the variance in the response variable for different treatments.

Accepted Answer

A) True 
 B)False

Exam 18: Hypothesis Testing: Means and Proportions

What is the degrees of freedom for the explained variation? a) 1 b) 8 c) 9 d) none of the above

The p‐value generally is sensitive to sample size, in that if the sample size increases, the p‐value usually will become larger.

To measure the difference between means or the difference between independent sample proportions, one would probably use which statistical technique? a) chi-square test b) sign test c) F-test d) t-test

The greater the p-value, the higher is the researcher's confidence in the research findings.

The ANOVA table is a conventional way to present a hypothesis test regarding the difference between several means.

The limits of the acceptance region are

A good descriptive statistic of measuring the strength of association is to measure "Rho," which is the proportion of variance accounted for in the sample data.

What is the value of rho from these data? a) 0.25 b) 0.333 c) 0.42 d) 0.5

The hypothesized value of the defect free printers is

When the sample statistic falls within the critical values, it proves that the null hypothesis is true.

In a hypothesis test when alpha is pre-specified, the researcher is trying to determine "Is the probability of what has been observed lesser than alpha?" and then decide accordingly.

The p-value is independent of the sample size.

What was the unexplained variation in this study? a) 80 b) 160 c) 340 d) 640

The rejection rule is

An interaction effect means that the impact of a specific treatment will not be the same for each condition of the other treatment in the ANOVA analysis.

In an ANOVA test, if the "between-treatment variance" is lesser than the "within-treatment variance," then the null hypothesis can be rejected.

In an ANOVA test, "within-treatment variance" corresponds to the variance in the response variable for a given treatment.

What F-value do you find from this table? a) 0.75 b) 0.9 c) 1.0 d) 1.6

The p-value can be defined as the largest significance level at which we would accept the null hypothesis.

In an ANOVA test, "between-treatment variance" corresponds to the variance in the response variable for different treatments.

A Decision Making Perspective on Marketing Intelligence

Marketing Research in Practice

The Marketing Research Process

Research Design and Implementation

Secondary Sources of Marketing Data

Standardized Sources of Marketing Data

Marketing Research on the Internet

Information Collection: Qualitative and Observational Methods

Information From Respondents: Issues in Data Collection

Information From Respondents: Survey Methods

Attitude Measurement

Designing the Questionnaire

Experimentation

Sampling Fundamentals

Sample Size and Statistical Theory

Fundamentals of Data Analysis

Hypothesis Testing: Basic Concepts and Tests of Association

Correlation Analysis and Regression Analysis

Discriminant, Factor and Cluster Analysis

Multidimensional Scaling and Conjoint Analysis

Presenting the Results

Marketing-Mix Measures

Brand and Customer Metrics

New Age Strategies

Filters