Question 1

In analysis of variance tests a F distribution forms the basis for making the decisions.

Accepted Answer

A) True 
 B)False

Question 2

Cindy Ho,VP of Finance at Discrete Components,Inc.(DCI),theorizes that the discount level offered to credit customers affects the average collection period on credit sales.Accordingly,she has designed an experiment to test her theory using four sales discount rates (0%,2%,4%,and 6%).First,she classified DCI's credit customers into three categories by total assets (small,medium,and large).Then,she randomly assigned four customers from each category to a sales discount rate.An analysis of Cindy's data yielded the following ANOVA table.   
Using $\alpha$ = 0.05,the appropriate decision for block effects is ________.

Accepted Answer

A) do not reject the null hypothesis  $\mu$ 1 $\neq$ $\mu$  2  $\neq$ $\mu$ 3 
B) do not reject the null hypothesis  $\mu$ 1 = $\mu$  2 = $\mu$ 3 
C) reject the null hypothesis $\mu$ 1 $\ge$ $\mu$  2 $\ge$ $\mu$ 3 
D) reject the null hypothesis  $\mu$ 1 $\le$$\mu$  2 $\le$ $\mu$ 3 
E) do nothing 
A) do not reject the null hypothesis  $\mu$ 1 $\neq$ $\mu$  2  $\neq$ $\mu$ 3 
B) do not reject the null hypothesis  $\mu$ 1 = $\mu$  2 = $\mu$ 3 
C) reject the null hypothesis $\mu$ 1 $\ge$ $\mu$  2 $\ge$ $\mu$ 3 
D) reject the null hypothesis  $\mu$ 1 $\le$$\mu$  2 $\le$ $\mu$ 3 
E) do nothing

Question 3

BigShots,Inc.is a specialty e-tailer that operates 87 catalog Web sites on the Internet.Kevin Conn,Sales Director,feels that the style (color scheme,graphics,fonts,etc.)of a Web site may affect its sales.He chooses three levels of design style (neon,old world and sophisticated)and randomly assigns six catalog Web sites to each design style.In Kevin's experiment "sales at a Web site" is _______.

Accepted Answer

A) a blocking variable 
B) a concomitant variable 
C) a treatment variable 
D) the dependent variable 
E) the independent variable 
A) a blocking variable 
B) a concomitant variable 
C) a treatment variable 
D) the dependent variable 
E) the independent variable

Question 4

The F value for treatment will always increase if we include a blocking effect.

Accepted Answer

A) True 
 B)False

Question 5

Suppose the owners of a new bed and breakfast establishment are interested in conducting an experiment to determine effective advertisement strategies for increasing the number of reservations.The bed and breakfast owners intend to rotate advertisements for 12 weeks between a travel website,a travel magazine and a local billboard.Customers making reservations will be asked if they saw the advertisement.In this experiment,the independent variable is ________________.

Accepted Answer

A) advertisement venue 
B) bed and breakfast establishment 
C) travel website 
D) number of reservations 
E) number of customer calls 
A) advertisement venue 
B) bed and breakfast establishment 
C) travel website 
D) number of reservations 
E) number of customer calls

Question 6

For the following ANOVA table,the HSD value,assuming equal sample sizes and using  $\alpha$ = 0.05 is ______

Accepted Answer

A) 1.86 
B) 3.94 
C) 3.19 
D) 1.645 
E) 3.52 
A) 1.86 
B) 3.94 
C) 3.19 
D) 1.645 
E) 3.52

Question 7

BigShots,Inc.is a specialty e-tailer that operates 87 catalog Web sites on the Internet.Kevin Conn,Sales Director,feels that the style (color scheme,graphics,fonts,etc.)of a Web site may affect its sales.He chooses three levels of design style (neon,old world and sophisticated)and randomly assigns six catalog Web sites to each design style.Kevin's experimental design is a ________.

Accepted Answer

A) factorial design 
B) random block design 
C) completely randomized design 
D) normalized block design 
E) partially randomized design 
A) factorial design 
B) random block design 
C) completely randomized design 
D) normalized block design 
E) partially randomized design

Question 8

While reviewing staffing plans for a new pilot plant,Colin Chenaux,VP of Operations at Clovis Chemicals,Inc.,designed an experiment to test the effects of "supervisor's style" and "training method" on the productivity of operators.The treatment levels were: (1)authoritarian,and participatory for supervisor's style,and (2)technical manuals,training films,and multimedia for training method.Three qualified applicants were randomly selected and assigned to each of the six cells.In Colin's experiment,"operator productivity" is _____________.

Accepted Answer

A) a concomitant variable 
B) a treatment variable 
C) the dependent variable 
D) a blocking variable 
E) a constant 
A) a concomitant variable 
B) a treatment variable 
C) the dependent variable 
D) a blocking variable 
E) a constant

Question 9

The Tukey-Kramer procedure allows us to simultaneously examine all pairs of population means after the ANOVA test has been completed without increasing the true α level.

Accepted Answer

A) True 
 B)False

Question 10

Medical Wonders is a specialized interior design company focused on healing artwork.The CEO,Kathleen Kelledy claims that artwork has healing effects for patients staying in a hospital,as measured by reduced length of stay.Her current client is a children's cancer hospital.Kathleen is interested in determining the effect of three different pieces of healing artwork on children.She chooses three paintings (a horse photo,a bright abstract,and a muted beach scene)and randomly assigns six hospital rooms to each painting.Kathleen's experimental design is a ________.

Accepted Answer

A) factorial design 
B) random block design 
C) normalized block design 
D) completely randomized design 
E) fractional design 
A) factorial design 
B) random block design 
C) normalized block design 
D) completely randomized design 
E) fractional design

Question 11

Cindy Ho,VP of Finance at Discrete Components,Inc.(DCI),theorizes that the discount level offered to credit customers affects the average collection period on credit sales.Accordingly,she has designed an experiment to test her theory using four sales discount rates (0%,2%,4%,and 6%).Cindy wants to control for the size of the customer but not to test for it as the main variable of interest so she classified DCI's credit customers into three categories by total assets (small,medium,and large).Then,she randomly assigned four customers from each category to a sales discount rate.In Cindy's experiment "total asset size of credit customer" is ________.

Accepted Answer

A) a surrogate variable 
B) the dependent variable 
C) a blocking variable 
D) a treatment variable 
E) a constant 
A) a surrogate variable 
B) the dependent variable 
C) a blocking variable 
D) a treatment variable 
E) a constant

Question 12

For the following ANOVA table,the dfError value is ___________.

Accepted Answer

A) 4 
B) 20 
C) 12 
D) 64 
E) 16 
A) 4 
B) 20 
C) 12 
D) 64 
E) 16

Question 13

Cindy Ho,VP of Finance at Discrete Components,Inc.(DCI),theorizes that the discount level offered to credit customers affects the average collection period on credit sales.Accordingly,she has designed an experiment to test her theory using four sales discount rates (0%,2%,4%,and 6%)by randomly assigning five customers to each sales discount rate.In Cindy's experiment,"sales discount rate" is ______.

Accepted Answer

A) the dependent variable 
B) a treatment variable 
C) a blocking variable 
D) a concomitant variable 
E) a constant 
A) the dependent variable 
B) a treatment variable 
C) a blocking variable 
D) a concomitant variable 
E) a constant

Question 14

Pate's Pharmacy,Inc.operates a regional chain of 120 pharmacies.Each pharmacy's floor plan includes a greeting card department which is relatively isolated.Sandra Royo,Marketing Manager,feels that the level of lighting in the greeting card department may affect sales in that department.She chooses three levels of lighting (soft,medium,and bright)and randomly assigns six pharmacies to each lighting level.Analysis of Sandra's data yielded the following ANOVA table.  
 Using $\alpha$ = 0.05,the appropriate decision is _____________.

Accepted Answer

A) do not reject the null hypothesis $\mu$ 1 $\neq$ $\mu$  2 $\neq$ $\mu$ 3 
B) do not reject the null hypothesis $\mu$ 1 = $\mu$  2 = $\mu$ 3 
C) reject the null hypothesis $\mu$ 1 $\ge$ $\mu$  2 $\ge$ $\mu$ 3 
D) reject the null hypothesis $\mu$ 1 $\le$ $\mu$  2 $\le$ $\mu$ 3 
E) inclusive 
A) do not reject the null hypothesis $\mu$ 1 $\neq$ $\mu$  2 $\neq$ $\mu$ 3 
B) do not reject the null hypothesis $\mu$ 1 = $\mu$  2 = $\mu$ 3 
C) reject the null hypothesis $\mu$ 1 $\ge$ $\mu$  2 $\ge$ $\mu$ 3 
D) reject the null hypothesis $\mu$ 1 $\le$ $\mu$  2 $\le$ $\mu$ 3 
E) inclusive

Question 15

For the following ANOVA table,the critical value of the studentized range distribution using  $\alpha$ = 0.05 is ______

Accepted Answer

A) 1.86 
B) 3.94 
C) 9.17 
D) 1.65 
E) 1.79 
A) 1.86 
B) 3.94 
C) 9.17 
D) 1.65 
E) 1.79

Question 16

BigShots,Inc.is a specialty e-tailer that operates 87 catalog Web sites on the Internet.Kevin Conn,Sales Director,feels that the style (color scheme,graphics,fonts,etc.)of a Web site may affect its sales.He chooses three levels of design style (neon,old world and sophisticated)and randomly assigns six catalog Web sites to each design style.Kevin's null hypothesis is _____________.

Accepted Answer

A) $\mu$ 1 $\ge$ $\mu$  2 $\ge$ $\mu$ 3 
B) $\mu$ 1 $\neq$ $\mu$  2 $\neq$ $\mu$ 3 
C) $\mu$ 1 = $\mu$  2 = $\mu$ 3 
D) $\mu$ 1 $\le$ $\mu$  2 $\le$ $\mu$ 3 
E) $\mu$ 1 $\le$ $\mu$  2 $\ge$ $\mu$ 3 
A) $\mu$ 1 $\ge$ $\mu$  2 $\ge$ $\mu$ 3 
B) $\mu$ 1 $\neq$ $\mu$  2 $\neq$ $\mu$ 3 
C) $\mu$ 1 = $\mu$  2 = $\mu$ 3 
D) $\mu$ 1 $\le$ $\mu$  2 $\le$ $\mu$ 3 
E) $\mu$ 1 $\le$ $\mu$  2 $\ge$ $\mu$ 3

Question 17

Cindy Ho,VP of Finance at Discrete Components,Inc.(DCI),theorizes that the discount level offered to credit customers affects the average collection period on credit sales.Accordingly,she has designed an experiment to test her theory using four sales discount rates (0%,2%,4%,and 6%).Cindy wants to control for the size of the customer but not to test for it as the main variable of interest so she classified DCI's credit customers into three categories by total assets (small,medium,and large).Then,she randomly assigned four customers from each category to a sales discount rate.Cindy's experimental design is a ________.

Accepted Answer

A) normalized block design 
B) completely randomized design 
C) factorial design 
D) random block design 
E) partially randomized design 
A) normalized block design 
B) completely randomized design 
C) factorial design 
D) random block design 
E) partially randomized design

Question 18

Cindy Ho,VP of Finance at Discrete Components,Inc.(DCI),theorizes that the discount level offered to credit customers affects the average collection period on credit sales.Accordingly,she has designed an experiment to test her theory using four sales discount rates (0%,2%,4%,and 6%).First,she classified DCI's credit customers into three categories by total assets (small,medium,and large).Then,she randomly assigned four customers from each category to a sales discount rate.In Cindy's experiment "sales discount rate" is ________.

Accepted Answer

A) a surrogate variable 
B) the dependent variable 
C) a blocking variable 
D) a treatment variable 
E) a constant 
A) a surrogate variable 
B) the dependent variable 
C) a blocking variable 
D) a treatment variable 
E) a constant

Question 19

In experimental design,classification variables are independent variables.

Accepted Answer

A) True 
 B)False

Question 20

Medical Wonders is a specialized interior design company focused on healing artwork.The CEO,Kathleen Kelledy claims that artwork has healing effects for patients staying in a hospital,as measured by reduced length of stay.Her current client is a children's cancer hospital.Kathleen is interested in determining the effect of three different pieces of healing artwork on children.She chooses three paintings (a horse photo,a bright abstract,and a muted beach scene)and randomly assigns six hospital rooms to each painting.Analysis of Kathleen's data yielded the following ANOVA table.   
Using $\alpha$ = 0.05,the observed F value is _____________.

Accepted Answer

A) 16738.1 
B) 1769.75 
C) 33476.19 
D) 26546.18 
E) 9.457912 
A) 16738.1 
B) 1769.75 
C) 33476.19 
D) 26546.18 
E) 9.457912

In analysis of variance tests a F distribution forms the basis for making the decisions.

The F value for treatment will always increase if we include a blocking effect.

For the following ANOVA table,the HSD value,assuming equal sample sizes and using $\alpha$ = 0.05 is $For the following ANOVA table,the HSD value,assuming equal sample sizes and using \alpha = 0.05 is $

The Tukey-Kramer procedure allows us to simultaneously examine all pairs of population means after the ANOVA test has been completed without increasing the true α level.

For the following ANOVA table,the dfError value is ___________.

For the following ANOVA table,the critical value of the studentized range distribution using $\alpha$ = 0.05 is $For the following ANOVA table,the critical value of the studentized range distribution using \alpha = 0.05 is $

In experimental design,classification variables are independent variables.

Introduction to Statistics

Charts and Graphs

Descriptive Statistics

Probability

Discrete Distributions

Continuous Distributions

Sampling and Sampling Distributions

Statistical Inference: Estimation for Single Populations

Statistical Inference: Hypothesis Testing for Single Populations

Statistical Inferences About Two Populations

Simple Regression Analysis and Correlation

Multiple Regression Analysis

Building Multiple Regression Models

Time-Series Forecasting and Index Numbers

Analysis of Categorical Data

Nonparametric Statistics

Statistical Quality Control

Decision Analysis

Filters

Exam 11: Analysis of Variance and Design of Experiments

In analysis of variance tests a F distribution forms the basis for making the decisions.

The F value for treatment will always increase if we include a blocking effect.

For the following ANOVA table,the HSD value,assuming equal sample sizes and using α\alphaα = 0.05 is ______

The Tukey-Kramer procedure allows us to simultaneously examine all pairs of population means after the ANOVA test has been completed without increasing the true α level.

For the following ANOVA table,the dfError value is ___________.

For the following ANOVA table,the critical value of the studentized range distribution using α\alphaα = 0.05 is ______

In experimental design,classification variables are independent variables.

Introduction to Statistics

Charts and Graphs

Descriptive Statistics

Probability

Discrete Distributions

Continuous Distributions

Sampling and Sampling Distributions

Statistical Inference: Estimation for Single Populations

Statistical Inference: Hypothesis Testing for Single Populations

Statistical Inferences About Two Populations

Simple Regression Analysis and Correlation

Multiple Regression Analysis

Building Multiple Regression Models

Time-Series Forecasting and Index Numbers

Analysis of Categorical Data

Nonparametric Statistics

Statistical Quality Control

Decision Analysis

Filters

For the following ANOVA table,the HSD value,assuming equal sample sizes and using $\alpha$ = 0.05 is $For the following ANOVA table,the HSD value,assuming equal sample sizes and using \alpha = 0.05 is $

For the following ANOVA table,the critical value of the studentized range distribution using $\alpha$ = 0.05 is $For the following ANOVA table,the critical value of the studentized range distribution using \alpha = 0.05 is $