Information Raw Scores Group 1 13 16 12 18 15 Group 2 23 11

Information

Raw Scores:

Group 1:          13        16        12        18        15

Group 2:          23        11        16        9          13

Use the Data above for problems 17-20

Question 17 (1 point)

Ranks:

Question 17 options:

6,5,2,8,4,3,7
9,2,5,1,10,7,4

4.5   7.5   3,    9,    6

10,   2,    7.5,   1 4.5

11,12,,15,,13,,23,,24,,28
10,11,,15,,16,,23,,33,,35

1,2,3,4,5,6,7
1,2,3,4,5,6,7

Question 18 (1 point)

What are the n1, n2 values for this problem?

Question 18 options:

7,7

6,6,

5, 5

25,   19

Question 19 (1 point)

If alpha is set at .05, what is the tabled value if this is a two-tailed test?

Question 19 options:

17

41

28

51

Question 20 (1 point)

Is there a significant difference?

Question 20 options:

Yes

No

Can\'t be determined from the information given

Solution

17.

For ranks we assimilate the data from both groups and then sort them in ascending order and then provide them ranks and replace original data with ranks.

In this case after sorting we get

Placing them back we get,

18.

n₁ and n₂ are the number of scores in each group.

19.

Sum (Rank Group 1) = 4.5+7.5+3+9+6 = 30

Sum (Rank Group 2) = 10+2+7.5+1+4.5 = 25

U = 5*5 +0.5*5*6 - 25 = 15

The critical U value is 2.

Hence the result is not significant.