Question 1

Assessments of TV Shows
 Because of the cost of producing television shows and the profits associated with successful shows,television network executives are keenly interested in public opinion.A network has recently developed three comedy series.The pilot of each series is shown in to 10 randomly selected people who evaluate each show on a 9-point scale where 1 = terrible and 9 = excellent.The results are shown below.  ​ ​
-{Assessments of TV Shows Narrative} Can we infer at the 5% significance level that differences exist among the show's evaluations?

Accepted Answer

The answer of Assessments of TV Shows
 Because of the...

Question 2

Assessments of TV Shows
 Because of the cost of producing television shows and the profits associated with successful shows,television network executives are keenly interested in public opinion.A network has recently developed three comedy series.The pilot of each series is shown in to 10 randomly selected people who evaluate each show on a 9-point scale where 1 = terrible and 9 = excellent.The results are shown below.  ​ ​
-{Assessments of TV Shows Narrative} Which statistical technique is appropriate if the television network executives want to compare the three comedy shows?

Accepted Answer

The answer of Assessments of TV Shows
 Because of the...

Question 3

Advertisement
 ​ In a Kruskal-Wallis test to determine whether differences exist among three different advertisements,the following statistics were obtained: TS1U1B11S1U1B0 = 884,nS1U1B11S1U1B0 = 20,TS1U1B12S1U1B0 = 756,nS1U1B12S1U1B0 = 28,TS1U1B13S1U1B0 = 1061,nS1U1B13S1U1B0 = 25. ​ ​
-{Advertisement Narrative} Conduct the test at the 5% significance level.

Accepted Answer

The answer of Advertisement
 ​ In a Kruskal-Wallis test to...

Question 4

Song Ratings
 A music critic wanted to determine whether or not music listeners of different age groups evaluate a song differently.With this objective,he commissioned a survey that asked people their ratings of the most popular songs.The rating categories were: 1 = terrible,2 = fair,3 = good,and 4 = excellent.Each respondent was also asked to categorize his or her age as either: 1 = teenager,2 = young adult (20-34),3 = middle age (35-50),and 4 = over 50. The results are shown below.  ​ ​
-{Song Ratings Narrative} Explain how to use the p-value for testing the hypotheses.

Accepted Answer

The answer of Song Ratings
 A music critic wanted to...

Question 5

Advertisement
 ​ In a Kruskal-Wallis test to determine whether differences exist among three different advertisements,the following statistics were obtained: TS1U1B11S1U1B0 = 884,nS1U1B11S1U1B0 = 20,TS1U1B12S1U1B0 = 756,nS1U1B12S1U1B0 = 28,TS1U1B13S1U1B0 = 1061,nS1U1B13S1U1B0 = 25. ​ ​
-{Advertisement Narrative} What is the most accurate statement that can be made about the p-value of this test?

Accepted Answer

The answer of Advertisement
 ​ In a Kruskal-Wallis test to...

Question 6

Frozen TV Dinner 
The general manager of a frozen TV dinner maker must decide which one of four new dinners to introduce to the market.He decides to perform an experiment to help make a decision.Each dinner is sampled by ten people who then rate the product on a 7-point scale,where 1 = poor,and 7 = excellent.The results are shown below.  ​ ​
-{Frozen TV Dinner Narrative} Which statistical technique can the general manager use to help him make a decision?

Accepted Answer

The answer of Frozen TV Dinner 
The general manager of...

Question 7

The data below are drawn from four independent populations:  Test at the 1% significance level to determine whether the population locations differ.

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The answer of The data below are drawn from four...

Question 8

In the case of comparing two population locations,the Friedman test can only determine whether a difference exists.To determine which population,for example,has a higher location requires the use of the ____________________ test.

Accepted Answer

The answer of In the case of comparing two population...

Question 9

Customers' Ages
 The marketing manager of a Hot Dog Stand chain is in the process of examining some of the demographic characteristics of her customers.In particular,she would like to investigate the belief that the ages of the customers of hot dogs,fast-food hamburger,and fast-food chicken restaurants are different.To test this belief,the ages of eight randomly selected customers from each restaurant type were recorded and listed below.From previous analysis we know that the ages are not normally distributed.  ​ ​
-{Customers' Ages Narrative} Using the appropriate statistical table,what statement can be made about the p-value for this test?

Accepted Answer

The answer of Customers' Ages
 The marketing manager of a...

Question 10

Customers' Ages
 The marketing manager of a Hot Dog Stand chain is in the process of examining some of the demographic characteristics of her customers.In particular,she would like to investigate the belief that the ages of the customers of hot dogs,fast-food hamburger,and fast-food chicken restaurants are different.To test this belief,the ages of eight randomly selected customers from each restaurant type were recorded and listed below.From previous analysis we know that the ages are not normally distributed.  ​ ​
-{Customers' Ages Narrative} Explain how to use the p-value for testing the hypotheses?

Accepted Answer

The answer of Customers' Ages
 The marketing manager of a...

Question 11

When the Friedman test is used to test for a difference between two populations,it will produce the same outcome as the ____________________ test.

Accepted Answer

The answer of When the Friedman test is used to...

Question 12

Frozen TV Dinner 
The general manager of a frozen TV dinner maker must decide which one of four new dinners to introduce to the market.He decides to perform an experiment to help make a decision.Each dinner is sampled by ten people who then rate the product on a 7-point scale,where 1 = poor,and 7 = excellent.The results are shown below.  ​ ​
-{Frozen TV Dinner Narrative} Can the general manager infer at the 5% significance level that there are differences in the taste ratings of the four dinners?

Accepted Answer

The answer of Frozen TV Dinner 
The general manager of...

Question 13

Song Ratings
 A music critic wanted to determine whether or not music listeners of different age groups evaluate a song differently.With this objective,he commissioned a survey that asked people their ratings of the most popular songs.The rating categories were: 1 = terrible,2 = fair,3 = good,and 4 = excellent.Each respondent was also asked to categorize his or her age as either: 1 = teenager,2 = young adult (20-34),3 = middle age (35-50),and 4 = over 50. The results are shown below.  ​ ​
-{Song Ratings Narrative} Which test can the movie critic use in this situation?

Accepted Answer

The answer of Song Ratings
 A music critic wanted to...

Question 14

The Friedman test is always one tailed.The inequality sign in the alternative hypothesis is always ____________________.

Accepted Answer

The answer of The Friedman test is always one tailed.The...

Question 15

Frozen TV Dinner 
The general manager of a frozen TV dinner maker must decide which one of four new dinners to introduce to the market.He decides to perform an experiment to help make a decision.Each dinner is sampled by ten people who then rate the product on a 7-point scale,where 1 = poor,and 7 = excellent.The results are shown below.  ​ ​
-{Frozen TV Dinner Narrative} Using the appropriate statistical table,what statement can be made about the p-value for this test?

Accepted Answer

The answer of Frozen TV Dinner 
The general manager of...

Question 16

Song Ratings
 A music critic wanted to determine whether or not music listeners of different age groups evaluate a song differently.With this objective,he commissioned a survey that asked people their ratings of the most popular songs.The rating categories were: 1 = terrible,2 = fair,3 = good,and 4 = excellent.Each respondent was also asked to categorize his or her age as either: 1 = teenager,2 = young adult (20-34),3 = middle age (35-50),and 4 = over 50. The results are shown below.  ​ ​
-{Song Ratings Narrative} Does this data provide sufficient evidence to infer at the 5% significance level that there are differences in ratings among the different age categories?

Accepted Answer

The answer of Song Ratings
 A music critic wanted to...

Question 17

Customers' Ages
 The marketing manager of a Hot Dog Stand chain is in the process of examining some of the demographic characteristics of her customers.In particular,she would like to investigate the belief that the ages of the customers of hot dogs,fast-food hamburger,and fast-food chicken restaurants are different.To test this belief,the ages of eight randomly selected customers from each restaurant type were recorded and listed below.From previous analysis we know that the ages are not normally distributed.  ​ ​
-{Customers' Ages Narrative} Does this data provide enough evidence at the 10% significance level to infer that there are differences in ages among the customers of the three restaurant types?

Accepted Answer

The answer of Customers' Ages
 The marketing manager of a...

Question 18

Song Ratings
 A music critic wanted to determine whether or not music listeners of different age groups evaluate a song differently.With this objective,he commissioned a survey that asked people their ratings of the most popular songs.The rating categories were: 1 = terrible,2 = fair,3 = good,and 4 = excellent.Each respondent was also asked to categorize his or her age as either: 1 = teenager,2 = young adult (20-34),3 = middle age (35-50),and 4 = over 50. The results are shown below.  ​ ​
-{Song Ratings Narrative} What statement can be made about the p-value for this test?

Accepted Answer

The answer of Song Ratings
 A music critic wanted to...

Question 19

The test statistic F_r for the Friedman test has an approximate ____________________ distribution.

Accepted Answer

The answer of The test statistic F_r for the Friedman...

Question 20

Advertisement
 ​ In a Kruskal-Wallis test to determine whether differences exist among three different advertisements,the following statistics were obtained: TS1U1B11S1U1B0 = 884,nS1U1B11S1U1B0 = 20,TS1U1B12S1U1B0 = 756,nS1U1B12S1U1B0 = 28,TS1U1B13S1U1B0 = 1061,nS1U1B13S1U1B0 = 25. ​ ​
-{Advertisement Narrative} Explain how to use the p-value for testing the hypotheses.

Accepted Answer

The answer of Advertisement
 ​ In a Kruskal-Wallis test to...

Quiz 19: Nonparametric Statistics

Advertisement In a Kruskal-Wallis test to determine whether differences exist among three different advertisements,the following statistics were obtained: T₁ = 884,n₁ = 20,T₂ = 756,n₂ = 28,T₃ = 1061,n₃ = 25. -{Advertisement Narrative} Conduct the test at the 5% significance level.

The data below are drawn from four independent populations: Test at the 1% significance level to determine whether the population locations differ.

In the case of comparing two population locations,the Friedman test can only determine whether a difference exists.To determine which population,for example,has a higher location requires the use of the ____________________ test.

When the Friedman test is used to test for a difference between two populations,it will produce the same outcome as the ____________________ test.

The Friedman test is always one tailed.The inequality sign in the alternative hypothesis is always ____________________.

The test statistic F_r for the Friedman test has an approximate ____________________ distribution.

Quiz 19: Nonparametric Statistics

Advertisement ​ In a Kruskal-Wallis test to determine whether differences exist among three different advertisements,the following statistics were obtained: T1 = 884,n1 = 20,T2 = 756,n2 = 28,T3 = 1061,n3 = 25. ​ ​ -{Advertisement Narrative} Conduct the test at the 5% significance level.

The data below are drawn from four independent populations: Test at the 1% significance level to determine whether the population locations differ.

In the case of comparing two population locations,the Friedman test can only determine whether a difference exists.To determine which population,for example,has a higher location requires the use of the ____________________ test.

When the Friedman test is used to test for a difference between two populations,it will produce the same outcome as the ____________________ test.

The Friedman test is always one tailed.The inequality sign in the alternative hypothesis is always ____________________.

The test statistic Fr for the Friedman test has an approximate ____________________ distribution.

Advertisement In a Kruskal-Wallis test to determine whether differences exist among three different advertisements,the following statistics were obtained: T₁ = 884,n₁ = 20,T₂ = 756,n₂ = 28,T₃ = 1061,n₃ = 25. -{Advertisement Narrative} Conduct the test at the 5% significance level.

The test statistic F_r for the Friedman test has an approximate ____________________ distribution.