A psychologist investigates the hypothesis that birth order affects assertiveness

profiletutor4helpyou
 (Not rated)
 (Not rated)
Chat

24. A psychologist investigates the hypothesis that birth order affects assertiveness. Her subjects are 20 young adults between 20 and 25 years of age. There are seven first-born, six second-born, and seven third born subjects. Each subject is given an assertiveness test, with the following results. High scores indicate greater assertiveness. Assume the data are so far from normally distributed that the F test can’t be used, but the data are at least of ordinal scaling. Use α =  0.01 to evaluate the data. What is your conclusion?

 

 

Condition 1

First-Born

Rank

Condition 2

Second-Born

Rank

Condition 3

Third-Born

Rank

18

12

18

12

7

6

8

7

12

9

19

14

4

4

3

3

2

2

21

15

24

17

30

19

28

18

22

16

18

12

32

20

1

1

5

5

10

8

 

 

14

10

 

= 7

 

= 84

 

= 6

 

= 58

 

= 7

 

= 68

 

26. A major oil company conducts an experiment to assess whether a film designed to tell the truth about, and also promote more favorable attitudes toward, large oil companies really does result in more favorable attitudes. Twelve individuals are run in a replicated measures design. In the “Before” condition, each subject fills out a questionnaire designed to assess attitudes toward large oil companies. In the “After” condition, the subjects see the film, after which they fill out the questionnaire. The following scores were obtained. High scores indicate more favorable attitudes toward large oil companies. Analyze the data using the Wilcoxon signed ranks

 

 

Before

After

Difference

Rank of (Difference)

Signed Rank of Difference

Sum of Positive Ranks

Sum of Negative Ranks

43

45

-2

1

-1

 

1

48

60

-12

11

-11

 

11

25

22

3

2

2

2

 

24

33

-9

8

-8

 

8

15

7

8

7

7

7

 

18

22

-4

3

-3

 

3

35

41

-6

5

-5

 

5

28

21

7

6

6

6

 

41

55

-14

12

-12

 

12

28

33

-5

4

-4

 

4

34

44

-10

9

-9

 

9

12

23

-11

10

-10

 

10

  • 9 years ago
A psychologist investigates the hypothesis that birth order affects assertiveness
NOT RATED

Purchase the answer to view it

blurred-text
  • attachment
    solution.docx