Deck 10: After a Significant Analysis of Variance: Multiple Comparison Tests

Question 1

A consumer psychologist wishes to determine whether playing music increases sales. The owner plays either no music, soft rock, classical, or jazz and notes the sales for 28 people under these conditions. The following numbers are in dollar amounts per shopper. $\begin{array} { c c c c } \hline \text { No Music } & \text { Soft Rock } & \text { Classical } & \text { Jazz } \\\hline 128 & 57 & 87 & 55 \\101 & 32 & 40 & 24 \\157 & 93 & 21 & 95 \\196 & 35 & 92 & 19 \\163 & 58 & 55 & 60 \\144 & 61 & 59 & 85 \\170 & 82 & 39 & 54 \\\hline\end{array}$

-Based on Tukey's HSD results, all but one of the following is true.Which is not a true statement?

A)The no-music condition produced the greatest sales.
B)The soft rock condition produced the second best sales.
C)There were no differences in sales between soft rock, classical, and jazz.

Answer 1

The soft rock condition produced the second best sales.

Question 2

A psychologist wishes to determine which of four diet plans works best. The psychologist randomly assigns 32 overweight clients to one of four diet plans: Life on Herbs (LOH), E-mail-A-Meal (EAM), Weight-Lookers (WLK), and Low-Carbs (LOC). The numbers represent weight loss in pounds for 3 months for each client.

-The results of Tukey's HSD test for Problem 1 revealed

A)the Weight-Lookers group was the best diet
B)the Weight-Lookers group lost the least weight
C)there were no differences in mean weight loss between the Weight-Lookers group and the Low-Carbs group
D)the E-mail-A-Meal group lost more weight than the Life on Herbs group

Answer 2

the Weight-Lookers group lost the least weight

Question 3

A consumer psychologist wishes to determine whether playing music increases sales. The owner plays either no music, soft rock, classical, or jazz and notes the sales for 28 people under these conditions. The following numbers are in dollar amounts per shopper. $\begin{array} { c c c c } \hline \text { No Music } & \text { Soft Rock } & \text { Classical } & \text { Jazz } \\\hline 128 & 57 & 87 & 55 \\101 & 32 & 40 & 24 \\157 & 93 & 21 & 95 \\196 & 35 & 92 & 19 \\163 & 58 & 55 & 60 \\144 & 61 & 59 & 85 \\170 & 82 & 39 & 54 \\\hline\end{array}$

-Remember for this question, you are answering based on the results of Tukey's test, not on the mathematical results.The results of Tukey's HSD test for this problem revealed that

A)the soft rock condition produced the second greatest sales, that is, better than the classical and jazz conditions
B)the soft rock, classical, and jazz conditions all were tied as second best, next to the no-music condition
C)the jazz condition produced the least amount of sales
D)the classical condition produced the third best amount of sales

Answer 3

the soft rock, classical, and jazz conditions all were tied as second best, next to the no-music condition

Question 4

In the sample problem in Chapter 10, which of the following is true?

A)The mean driving score for the 100-mg group was significantly greater than the placebo group.
B)The mean driving score for the 100-mg group was significantly less than the placebo group.
C)The mean driving score of the 100-mg group was not significantly different from the placebo group.
D)The 100-mg group statistically had the highest mean driving score.

Question 5

A psychologist wishes to determine which of four diet plans works best. The psychologist randomly assigns 32 overweight clients to one of four diet plans: Life on Herbs (LOH), E-mail-A-Meal (EAM), Weight-Lookers (WLK), and Low-Carbs (LOC). The numbers represent weight loss in pounds for 3 months for each client.

-The value of q in the appendix for Tukey's q values is

A)3.90
B)4.91
C)3.85
D)4.80

Question 6

A psychologist wishes to determine which of four diet plans works best. The psychologist randomly assigns 32 overweight clients to one of four diet plans: Life on Herbs (LOH), E-mail-A-Meal (EAM), Weight-Lookers (WLK), and Low-Carbs (LOC). The numbers represent weight loss in pounds for 3 months for each client.

-What error degrees of freedom would be chosen in the appendix for Tukey's q value?

A)3
B)24
C)30
D)8

Question 7

A psychologist wishes to determine which of four diet plans works best. The psychologist randomly assigns 32 overweight clients to one of four diet plans: Life on Herbs (LOH), E-mail-A-Meal (EAM), Weight-Lookers (WLK), and Low-Carbs (LOC). The numbers represent weight loss in pounds for 3 months for each client.

-The value of r in Appendix F for Tukey's q values is

A)2
B)4
C)8
D)32

Question 8

A consumer psychologist wishes to determine whether playing music increases sales. The owner plays either no music, soft rock, classical, or jazz and notes the sales for 28 people under these conditions. The following numbers are in dollar amounts per shopper. $\begin{array} { c c c c } \hline \text { No Music } & \text { Soft Rock } & \text { Classical } & \text { Jazz } \\\hline 128 & 57 & 87 & 55 \\101 & 32 & 40 & 24 \\157 & 93 & 21 & 95 \\196 & 35 & 92 & 19 \\163 & 58 & 55 & 60 \\144 & 61 & 59 & 85 \\170 & 82 & 39 & 54 \\\hline\end{array}$

-The value of N in the Tukey's HSD formula for the above problem is

A)7
B)14
C)28
D)40

Question 9

A psychologist wishes to determine which of four diet plans works best. The psychologist randomly assigns 32 overweight clients to one of four diet plans: Life on Herbs (LOH), E-mail-A-Meal (EAM), Weight-Lookers (WLK), and Low-Carbs (LOC). The numbers represent weight loss in pounds for 3 months for each client.

-Tukey's HSD value for Problem 1 would be

A)5.45
B)3.90
C)4.91
D)4.80

Question 10

A harmonic mean is used instead of the arithmetic mean when

A)there are an unequal number of scores in each group
B)the scores are not harmonic
C)the standard deviations are unequal
D)the homogeneity of variance assumption has been violated

Question 11

A psychologist wishes to determine which of four diet plans works best. The psychologist randomly assigns 32 overweight clients to one of four diet plans: Life on Herbs (LOH), E-mail-A-Meal (EAM), Weight-Lookers (WLK), and Low-Carbs (LOC). The numbers represent weight loss in pounds for 3 months for each client.

-The value of N in the Tukey's HSD formula for the above problem is

A)8
B)16
C)32
D)40

Question 12

A psychologist wishes to determine which of four diet plans works best. The psychologist randomly assigns 32 overweight clients to one of four diet plans: Life on Herbs (LOH), E-mail-A-Meal (EAM), Weight-Lookers (WLK), and Low-Carbs (LOC). The numbers represent weight loss in pounds for 3 months for each client.

-Based on Tukey's HSD results, all but one of the following is true.Which is not a true statement?

A)The Low-Carbs diet produced the most weight loss.
B)There was no significant difference in weight loss between the E-mail-A-Meal and the Life on Herbs diets.
C)The Weight-Lookers diet produced the least weight loss.
D)The Life on Herbs diet produced a greater weight loss than the E-mail-A-Meal diet.

Question 13

A consumer psychologist wishes to determine whether playing music increases sales. The owner plays either no music, soft rock, classical, or jazz and notes the sales for 28 people under these conditions. The following numbers are in dollar amounts per shopper. $\begin{array} { c c c c } \hline \text { No Music } & \text { Soft Rock } & \text { Classical } & \text { Jazz } \\\hline 128 & 57 & 87 & 55 \\101 & 32 & 40 & 24 \\157 & 93 & 21 & 95 \\196 & 35 & 92 & 19 \\163 & 58 & 55 & 60 \\144 & 61 & 59 & 85 \\170 & 82 & 39 & 54 \\\hline\end{array}$

-The value of q in the appendix for Tukey's q values is

A)3.90
B)4.91
C)3.85
D)4.80

Question 14

A consumer psychologist wishes to determine whether playing music increases sales. The owner plays either no music, soft rock, classical, or jazz and notes the sales for 28 people under these conditions. The following numbers are in dollar amounts per shopper. $\begin{array} { c c c c } \hline \text { No Music } & \text { Soft Rock } & \text { Classical } & \text { Jazz } \\\hline 128 & 57 & 87 & 55 \\101 & 32 & 40 & 24 \\157 & 93 & 21 & 95 \\196 & 35 & 92 & 19 \\163 & 58 & 55 & 60 \\144 & 61 & 59 & 85 \\170 & 82 & 39 & 54 \\\hline\end{array}$

-The value of r in the appendix for Tukey's q values is

A)2
B)4
C)8
D)32

Question 15

A consumer psychologist wishes to determine whether playing music increases sales. The owner plays either no music, soft rock, classical, or jazz and notes the sales for 28 people under these conditions. The following numbers are in dollar amounts per shopper. $\begin{array} { c c c c } \hline \text { No Music } & \text { Soft Rock } & \text { Classical } & \text { Jazz } \\\hline 128 & 57 & 87 & 55 \\101 & 32 & 40 & 24 \\157 & 93 & 21 & 95 \\196 & 35 & 92 & 19 \\163 & 58 & 55 & 60 \\144 & 61 & 59 & 85 \\170 & 82 & 39 & 54 \\\hline\end{array}$

-Tukey's HSD value for this problem would be

A)39.7
B)91.5
C)45.3
D)91.2

Question 16

A consumer psychologist wishes to determine whether playing music increases sales. The owner plays either no music, soft rock, classical, or jazz and notes the sales for 28 people under these conditions. The following numbers are in dollar amounts per shopper. $\begin{array} { c c c c } \hline \text { No Music } & \text { Soft Rock } & \text { Classical } & \text { Jazz } \\\hline 128 & 57 & 87 & 55 \\101 & 32 & 40 & 24 \\157 & 93 & 21 & 95 \\196 & 35 & 92 & 19 \\163 & 58 & 55 & 60 \\144 & 61 & 59 & 85 \\170 & 82 & 39 & 54 \\\hline\end{array}$

-What error degrees of freedom would be chosen in the appendix for Tukey's q value?

A)3
B)24
C)30
D)8