Question 1

Use the following to answer questions :
Your associate just took a lunch break and gave you the following incomplete ANOVA table she was trying to finish before noon.The null hypothesis for this test is  .
 
-How many degrees of freedom are there for the between groups variation?

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Question 2

Using ANOVA,you test the hypothesis that the means of 3 treatments are the same.You calculate the MSW as 16.6.The value of the test statistic F is 2.1.What is the between samples sum of squares,rounded to two decimal places?

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Question 3

Use the following to answer questions :
The marketing manager for a software company is trying to decide whether to market her company's newest product by mail,on television,or through the Internet.She selects 20 communities in which to test-market the product,advertising through one of the three media in each community.The following table shows the amount of sales,in hundreds of dollars,for each community:
  Sales are normally distributed and the standard deviations are equal for all three methods of advertising.You are to test the hypothesis that the means are the same for all three treatments using the ANOVA method.
-The degrees of freedom for the numerator of the F distribution are:

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Question 4

Use the following to answer questions :
Your associate just took a lunch break and gave you the following incomplete ANOVA table she was trying to finish before noon.The null hypothesis for this test is  .
 
-What is the value of the total sum of squares? Round your answer to one decimal place.

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Question 5

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The marketing manager for a software company is trying to decide whether to market her company's newest product by mail,on television,or through the Internet.She selects 20 communities in which to test-market the product,advertising through one of the three media in each community.The following table shows the amount of sales,in hundreds of dollars,for each community:
  Sales are normally distributed and the standard deviations are equal for all three methods of advertising.You are to test the hypothesis that the means are the same for all three treatments using the ANOVA method.
-What is the variance within samples,rounded to four decimal places?

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Question 6

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A market research company randomly divides 12 stores from a large grocery chain into three groups of four stores each in order to compare the effect on mean sales of three different types of displays.The company uses display type 1 in four of the stores,display type 2 in four others,and display type 3 in the remaining four stores.Then it records the amount of sales (in $1,000's)during a one month period at each of the twelve stores.The table shown below reports the sales information.
  By using ANOVA,we wish to test the null hypothesis that the means of the three corresponding populations are equal.The significance level is 1%.
-The degrees of freedom for the numerator of the F distribution are:

Accepted Answer

The answer of Use the following to answer questions :
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Question 7

Use the following to answer questions :
Your associate just took a lunch break and gave you the following incomplete ANOVA table she was trying to finish before noon.The null hypothesis for this test is  .
 
-How many degrees of freedom are there for the within groups variation?

Accepted Answer

The answer of Use the following to answer questions :
Your...

Question 8

Use the following to answer questions :
Your associate just took a lunch break and gave you the following incomplete ANOVA table she was trying to finish before noon.The null hypothesis for this test is  .
 
-How many data points were used in this analysis?

Accepted Answer

The answer of Use the following to answer questions :
Your...

Question 9

Use the following to answer questions :
The marketing manager for a software company is trying to decide whether to market her company's newest product by mail,on television,or through the Internet.She selects 20 communities in which to test-market the product,advertising through one of the three media in each community.The following table shows the amount of sales,in hundreds of dollars,for each community:
  Sales are normally distributed and the standard deviations are equal for all three methods of advertising.You are to test the hypothesis that the means are the same for all three treatments using the ANOVA method.
-The value of the test statistic F,rounded to three decimal places,is:

Accepted Answer

The answer of Use the following to answer questions :
The...

Question 10

Use the following to answer questions :
Your associate just took a lunch break and gave you the following incomplete ANOVA table she was trying to finish before noon.The null hypothesis for this test is  .
 
-What is the value of the mean square within groups? Round your answer to three decimal places.

Accepted Answer

The answer of Use the following to answer questions :
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Question 11

Use the following to answer questions :
The marketing manager for a software company is trying to decide whether to market her company's newest product by mail,on television,or through the Internet.She selects 20 communities in which to test-market the product,advertising through one of the three media in each community.The following table shows the amount of sales,in hundreds of dollars,for each community:
  Sales are normally distributed and the standard deviations are equal for all three methods of advertising.You are to test the hypothesis that the means are the same for all three treatments using the ANOVA method.
-The degrees of freedom for the denominator of the F distribution are:

Accepted Answer

The answer of Use the following to answer questions :
The...

Question 12

Use the following to answer questions :
Your associate just took a lunch break and gave you the following incomplete ANOVA table she was trying to finish before noon.The null hypothesis for this test is  .
 
-What is the value of the mean square between groups? Round your answer to three decimal places.

Accepted Answer

The answer of Use the following to answer questions :
Your...

Question 13

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The table shown below gives information on a variable for four samples selected from four normally distributed populations with equal variances.
  By using ANOVA,we wish to test the null hypothesis that the means of the four corresponding populations are equal.The significance level is 5%.
-The value of the test statistic F,rounded to three decimal places,is:

Accepted Answer

The answer of Use the following to answer questions :
The...

Question 14

Use the following to answer questions :
The marketing manager for a software company is trying to decide whether to market her company's newest product by mail,on television,or through the Internet.She selects 20 communities in which to test-market the product,advertising through one of the three media in each community.The following table shows the amount of sales,in hundreds of dollars,for each community:
  Sales are normally distributed and the standard deviations are equal for all three methods of advertising.You are to test the hypothesis that the means are the same for all three treatments using the ANOVA method.
-The value of SSB,rounded to four decimal places,is:

Accepted Answer

The answer of Use the following to answer questions :
The...

Question 15

Use the following to answer questions :
A market research company randomly divides 12 stores from a large grocery chain into three groups of four stores each in order to compare the effect on mean sales of three different types of displays.The company uses display type 1 in four of the stores,display type 2 in four others,and display type 3 in the remaining four stores.Then it records the amount of sales (in $1,000's)during a one month period at each of the twelve stores.The table shown below reports the sales information.
  By using ANOVA,we wish to test the null hypothesis that the means of the three corresponding populations are equal.The significance level is 1%.
-The degrees of freedom for the denominator of the F distribution are:

Accepted Answer

The answer of Use the following to answer questions :
A...

Question 16

Use the following to answer questions :
A market research company randomly divides 12 stores from a large grocery chain into three groups of four stores each in order to compare the effect on mean sales of three different types of displays.The company uses display type 1 in four of the stores,display type 2 in four others,and display type 3 in the remaining four stores.Then it records the amount of sales (in $1,000's)during a one month period at each of the twelve stores.The table shown below reports the sales information.
  By using ANOVA,we wish to test the null hypothesis that the means of the three corresponding populations are equal.The significance level is 1%.
-The value of SSW,rounded to two decimal places,is:

Accepted Answer

The answer of Use the following to answer questions :
A...

Question 17

Use the following to answer questions :
A market research company randomly divides 12 stores from a large grocery chain into three groups of four stores each in order to compare the effect on mean sales of three different types of displays.The company uses display type 1 in four of the stores,display type 2 in four others,and display type 3 in the remaining four stores.Then it records the amount of sales (in $1,000's)during a one month period at each of the twelve stores.The table shown below reports the sales information.
  By using ANOVA,we wish to test the null hypothesis that the means of the three corresponding populations are equal.The significance level is 1%.
-The value of SSB is:

Accepted Answer

The answer of Use the following to answer questions :
A...

Question 18

Which of the following is not a characteristic of the F distribution?
A)It has two numbers of degrees of freedom: df for the numerator,and df for the denominator,and these two numbers may or may not be equal to each other.
B)It is symmetric.
C)It is continuous.
D)All units are nonnegative.

Accepted Answer

The F distribution is not symmetric.

Question 19

Use the following to answer questions :
The table shown below gives information on a variable for four samples selected from four normally distributed populations with equal variances.
  By using ANOVA,we wish to test the null hypothesis that the means of the four corresponding populations are equal.The significance level is 5%.
-The critical value of F is:
A)4.75
B)3.18
C)5.10
D)9.57

Accepted Answer

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Question 20

Use the following to answer questions :
A market research company randomly divides 12 stores from a large grocery chain into three groups of four stores each in order to compare the effect on mean sales of three different types of displays.The company uses display type 1 in four of the stores,display type 2 in four others,and display type 3 in the remaining four stores.Then it records the amount of sales (in $1,000's)during a one month period at each of the twelve stores.The table shown below reports the sales information.
  By using ANOVA,we wish to test the null hypothesis that the means of the three corresponding populations are equal.The significance level is 1%.
-The value of the test statistic F,rounded to three decimal places,is:

Accepted Answer

The answer of Use the following to answer questions :
A...

Quiz 12: Analysis of Variance

Use the following to answer questions : Your associate just took a lunch break and gave you the following incomplete ANOVA table she was trying to finish before noon.The null hypothesis for this test is . -How many degrees of freedom are there for the between groups variation?

Using ANOVA,you test the hypothesis that the means of 3 treatments are the same.You calculate the MSW as 16.6.The value of the test statistic F is 2.1.What is the between samples sum of squares,rounded to two decimal places?

Use the following to answer questions : Your associate just took a lunch break and gave you the following incomplete ANOVA table she was trying to finish before noon.The null hypothesis for this test is . -What is the value of the total sum of squares? Round your answer to one decimal place.

Use the following to answer questions : Your associate just took a lunch break and gave you the following incomplete ANOVA table she was trying to finish before noon.The null hypothesis for this test is . -How many degrees of freedom are there for the within groups variation?

Use the following to answer questions : Your associate just took a lunch break and gave you the following incomplete ANOVA table she was trying to finish before noon.The null hypothesis for this test is . -How many data points were used in this analysis?

Which of the following is not a characteristic of the F distribution?