Question 1

The F distribution's curve is positively skewed.

Accepted Answer

A) True 
 B)False

Question 2

When the null hypothesis for an ANOVA analysis comparing four treatment means is rejected, _________________.

Accepted Answer

A)  Two comparisons of treatment means can be made 
B)  Four comparisons of treatment means can be made 
C)  Six comparisons of treatment means can be made 
D)  Eight comparisons of treatment means can be made 
A)  Two comparisons of treatment means can be made 
B)  Four comparisons of treatment means can be made 
C)  Six comparisons of treatment means can be made 
D)  Eight comparisons of treatment means can be made

Question 3

In ANOVA analyses, when the null hypothesis is rejected, we can test for differences between treatment means by _____________.

Accepted Answer

A)  Constructing confidence intervals 
B)  Adding another treatment 
C)  Doing an additional ANOVA 
D)  Doing a t test 
A)  Constructing confidence intervals 
B)  Adding another treatment 
C)  Doing an additional ANOVA 
D)  Doing a t test

Question 4

Given the following ANOVA table for three treatments each with six observations:   What is the computed value of F?

Accepted Answer

A)  7.48 
B)  7.84 
C)  8.84 
D)  8.48 
A)  7.48 
B)  7.84 
C)  8.84 
D)  8.48

Question 5

A bottle cap manufacturer with four machines and six operators wants to see if variation in production is due to the machines and/or the operators. The ANOVA table follows.   What is the computed value of F for the operators?

Accepted Answer

11.94
Explanation: The compute

Question 6

The annual dividend rates for a random sample of 16 companies in three different industries, utilities, banking, and insurance were recorded. The ANOVA comparing the mean annual dividend rate among three industries rejected the null hypothesis that the dividend rates were equal. The mean square error (MSE) was 3.36. The following table summarized the results:   Based on the comparison between the mean annual dividend rate for companies in utilities and banking, the 95% confidence interval shows an interval of 1.28 to 6.28 for the difference. This result indicates that _____________________.

Accepted Answer

A)  there is no significant difference between the two rates 
B)  the interval contains a difference of 5.00 
C)  the annual dividend rate in the utilities industry is significantly less than the annual dividend rate in the banking industry 
D)  the annual dividend rate in the banking industry is significantly less than the annual dividend rate in the utilities industry 
A)  there is no significant difference between the two rates 
B)  the interval contains a difference of 5.00 
C)  the annual dividend rate in the utilities industry is significantly less than the annual dividend rate in the banking industry 
D)  the annual dividend rate in the banking industry is significantly less than the annual dividend rate in the utilities industry

Question 7

The human resources department of a software company encourages their employees to participate in a wellness program. They sampled 16 employees, 2 males and 2 females from four different workout routines and measured their peak heart rate. The ANOVA for the research follows.   Which source of variation significantly affects peak heart rate?

Accepted Answer

The answer of The human resources department of a software...

Question 8

A random sample of 30 executives from companies with assets over $1 million was selected and asked for their annual income and level of education. The ANOVA comparing the average income among three levels of education rejected the null hypothesis. The mean square error (MSE) was 243.7. The following table summarized the results:   When comparing the mean annual incomes for executives with undergraduate and master's degrees or more, which of the following 95% confidence interval can be constructed?

Accepted Answer

A)  2.0 ± 2.052 * 6.52 
B)  2.0 ± 3.182 * 6.52 
C)  2.0 ± 2.052 * 42.46 
D)  2.0 ± 3.182 * 42.46 
A)  2.0 ± 2.052 * 6.52 
B)  2.0 ± 3.182 * 6.52 
C)  2.0 ± 2.052 * 42.46 
D)  2.0 ± 3.182 * 42.46

Question 9

Interaction between two factors occurs when the effect of one factor on the response variable is the same for any value of another factor.

Accepted Answer

A) True 
 B)False

Question 10

When a second source of variance is included in the ANOVA analysis without interaction, that source is called a _________________.

Accepted Answer

The answer of When a second source of variance is...

Question 11

A manufacturer of automobile transmissions uses two different processes. Management ordered a study of the production costs to see if there is a difference between the two processes. A summary of the findings is shown next.   What is the critical value of F at the 5% level of significance?

Accepted Answer

A)  19.45 
B)  3.00 
C)  4.41 
D)  4.38 
A)  19.45 
B)  3.00 
C)  4.41 
D)  4.38

Question 12

In a two-way ANOVA, when is an interaction source of variance included?

Accepted Answer

An interaction source of varia

Question 13

A bottle cap manufacturer with four machines and six operators wants to see if variation in production is due to the machines and/or the operators. The ANOVA table follows.   What is the mean square for operators?

Accepted Answer

43
Explanation: Mean square op

Question 14

A random sample of 40 companies with assets over $10 million was surveyed and asked to indicate their industry and annual computer technology expense. The ANOVA comparing the average computer technology expense among three industries rejected the null hypothesis. The mean square error (MSE) was 195. The following table summarized the results:   Based on the comparison between the mean annual computer technology expense for companies in the education and tax services industries, _________________.

Accepted Answer

A)  a confidence interval shows that the mean annual computer technology expenses are not significantly different 
B)  the ANOVA results show that the mean annual computer technology expenses are significantly different 
C)  a confidence interval shows that the mean annual computer technology expenses are significantly different 
D)  the ANOVA results show that the mean annual computer technology expenses are not significantly different 
A)  a confidence interval shows that the mean annual computer technology expenses are not significantly different 
B)  the ANOVA results show that the mean annual computer technology expenses are significantly different 
C)  a confidence interval shows that the mean annual computer technology expenses are significantly different 
D)  the ANOVA results show that the mean annual computer technology expenses are not significantly different

Question 15

The human resources department of a software company encourages their employees to participate in a wellness program. They sampled 16 employees, 2 males and 2 females from four different workout routines and measured their peak heart rate. The ANOVA for the research follows.   What is the Interaction sum of squares?

Accepted Answer

60.187
Explanation: The mean square inte

Question 16

The F distribution is a ______________ distribution.

Accepted Answer

The answer of The F distribution is a ______________ distribution....

Question 17

Assuming that the larger of two variances is in the numerator of an F-statistic, the rejection region to test a null hypothesis is in the _________ tail of the F distribution.

Accepted Answer

The answer of Assuming that the larger of two variances...

Question 18

A random sample of 30 executives from companies with assets over $1 million was selected and asked for their annual income and level of education. The ANOVA comparing the average income among three levels of education rejected the null hypothesis. The mean square error (MSE) was 243.7. The following table summarized the results:   When comparing the mean annual incomes for executives with a high school education or less and those with an undergraduate degree, the 95% confidence interval shows an interval of 11.7 to 42.7 for the difference. This result indicates that __________________.

Accepted Answer

A)  there is no significant difference between the two incomes 
B)  the interval contains a difference of zero 
C)  executives with an undergraduate degree earn significantly more than executives with a high school education or less 
D)  executives with an undergraduate degree earn significantly less than executives with a high school education or less 
A)  there is no significant difference between the two incomes 
B)  the interval contains a difference of zero 
C)  executives with an undergraduate degree earn significantly more than executives with a high school education or less 
D)  executives with an undergraduate degree earn significantly less than executives with a high school education or less

Question 19

A bottle cap manufacturer with four machines and six operators wants to see if variation in production is due to the machines and/or the operators. The ANOVA table follows.   What are the degrees of freedom for the machines?

Accepted Answer

3
Explanat

Question 20

ANOVA requires that the populations should be ______, ______, and have _____.

Accepted Answer

normally distributed

The F distribution's curve is positively skewed.

When the null hypothesis for an ANOVA analysis comparing four treatment means is rejected, _________________.

In ANOVA analyses, when the null hypothesis is rejected, we can test for differences between treatment means by _____________.

Given the following ANOVA table for three treatments each with six observations: What is the computed value of F?

A bottle cap manufacturer with four machines and six operators wants to see if variation in production is due to the machines and/or the operators. The ANOVA table follows. What is the computed value of F for the operators?

Interaction between two factors occurs when the effect of one factor on the response variable is the same for any value of another factor.

When a second source of variance is included in the ANOVA analysis without interaction, that source is called a _________________.

A manufacturer of automobile transmissions uses two different processes. Management ordered a study of the production costs to see if there is a difference between the two processes. A summary of the findings is shown next. What is the critical value of F at the 5% level of significance?

In a two-way ANOVA, when is an interaction source of variance included?

A bottle cap manufacturer with four machines and six operators wants to see if variation in production is due to the machines and/or the operators. The ANOVA table follows. What is the mean square for operators?

The F distribution is a ______________ distribution.

Assuming that the larger of two variances is in the numerator of an F-statistic, the rejection region to test a null hypothesis is in the _________ tail of the F distribution.

A bottle cap manufacturer with four machines and six operators wants to see if variation in production is due to the machines and/or the operators. The ANOVA table follows. What are the degrees of freedom for the machines?

ANOVA requires that the populations should be , , and have _.

What Is Statistics

Describing Data: Frequency Tables, Frequency Distributions, and Graphic Presentation

Describing Data: Numerical Measures

Describing Data: Displaying and Exploring Data

A Survey of Probability Concepts

Discrete Probability Distributions

Continuous Probability Distributions

Sampling Methods and the Central Limit Theorem

Estimation and Confidence Intervals

One-Sample Tests of Hypothesis

Two-Sample Tests of Hypothesis

Correlation and Linear Regression

Multiple Regression Analysis

Nonparametric Methods: Nominal Level Hypothesis Tests

Nonparametric Methods: Analysis of Ordinal Data

Index Numbers

Time Series and Forecasting

Statistical Process Control and Quality Management

An Introduction to Decision Theory

Filters

Exam 12: Analysis of Variance

The F distribution's curve is positively skewed.

When the null hypothesis for an ANOVA analysis comparing four treatment means is rejected, _________________.

In ANOVA analyses, when the null hypothesis is rejected, we can test for differences between treatment means by _____________.

Given the following ANOVA table for three treatments each with six observations: What is the computed value of F?

A bottle cap manufacturer with four machines and six operators wants to see if variation in production is due to the machines and/or the operators. The ANOVA table follows. What is the computed value of F for the operators?

Interaction between two factors occurs when the effect of one factor on the response variable is the same for any value of another factor.

When a second source of variance is included in the ANOVA analysis without interaction, that source is called a _________________.

A manufacturer of automobile transmissions uses two different processes. Management ordered a study of the production costs to see if there is a difference between the two processes. A summary of the findings is shown next. What is the critical value of F at the 5% level of significance?

In a two-way ANOVA, when is an interaction source of variance included?

A bottle cap manufacturer with four machines and six operators wants to see if variation in production is due to the machines and/or the operators. The ANOVA table follows. What is the mean square for operators?

The F distribution is a ______________ distribution.

Assuming that the larger of two variances is in the numerator of an F-statistic, the rejection region to test a null hypothesis is in the _________ tail of the F distribution.

A bottle cap manufacturer with four machines and six operators wants to see if variation in production is due to the machines and/or the operators. The ANOVA table follows. What are the degrees of freedom for the machines?

ANOVA requires that the populations should be ______, ______, and have _____.

What Is Statistics

Describing Data: Frequency Tables, Frequency Distributions, and Graphic Presentation

Describing Data: Numerical Measures

Describing Data: Displaying and Exploring Data

A Survey of Probability Concepts

Discrete Probability Distributions

Continuous Probability Distributions

Sampling Methods and the Central Limit Theorem

Estimation and Confidence Intervals

One-Sample Tests of Hypothesis

Two-Sample Tests of Hypothesis

Correlation and Linear Regression

Multiple Regression Analysis

Nonparametric Methods: Nominal Level Hypothesis Tests

Nonparametric Methods: Analysis of Ordinal Data

Index Numbers

Time Series and Forecasting

Statistical Process Control and Quality Management

An Introduction to Decision Theory

Filters

ANOVA requires that the populations should be , , and have _.