Hey all!

I have a problem I cant solve. We have to formulate and reject or not 3 null hypothesis. I could formulate them but I cant do the z-test. I didnt write the null hypotheses yet tho, all I need really are the results of the z-test.

Heres the instructions "In the results section: (1) present the means and standard deviations of the correct number of words recalled for each of the four groups. (2) To check whether the experimental hypotheses were supported, conduct 3 different Z-tests. State the three null hypotheses and report the values of your Z statistics. Make all the necessary group comparisons: Compare Group 1 with Group 2, Group 3 with Group 4, and Groups 1+3 with Groups 2+4. (All hypotheses are tested at alpha = 0.05, where Z = ±1.96)."

The data show 52 people who had to remember words and the Yes/No show how much words were remembered by the 14 men and women and the Letter E shows how much E men and women counted in some words.

Men Yes/No Men Letter E Women Yes/No Women Letter E

4 - 4 - 5 - 6

8 - 6 - 11 - 4

5 - 6 - 14 - 1

14 - 6 - 9 - 0

11 - 3 - 11 - 4

6 - 0 - 10 - 4

9 - 4 - 10 - 3

9 - 8 - 7 - 2

10 - 2 - 9 - 6

8 - 3 - 9 - 5

12 - 4 - 11 4

11 - 5 - 7 - 3

8 - 2 - 12 - 5

4 - 2 - 7 - 1

(The data are in 4 colums, but the forums dont show all the spaces so you have to understand that the first number is Men Yes/No, the second Men E, etc. Theres no negative, the - is just to separate)

______________________________________________________

mean 8.5 3.92 9.42 3.42

SD: -2.43 -3.29 -2.21 -3.37

SE: -0.66 -0.87 -0.59 -0.9 (standard Error)

V 5.90 10.82 4.88 11.35 (Variance)

Under the line is what I found, and those are all the datas we have. We dont have the SD of the population, the mean of the population or anything else.

Any help to do the z test would be VERY apreciated! What I really need is the population or null hyp mean, I really dont know how to get it.

Thanks in advance for all responses!

pr1nce

I have a problem I cant solve. We have to formulate and reject or not 3 null hypothesis. I could formulate them but I cant do the z-test. I didnt write the null hypotheses yet tho, all I need really are the results of the z-test.

Heres the instructions "In the results section: (1) present the means and standard deviations of the correct number of words recalled for each of the four groups. (2) To check whether the experimental hypotheses were supported, conduct 3 different Z-tests. State the three null hypotheses and report the values of your Z statistics. Make all the necessary group comparisons: Compare Group 1 with Group 2, Group 3 with Group 4, and Groups 1+3 with Groups 2+4. (All hypotheses are tested at alpha = 0.05, where Z = ±1.96)."

The data show 52 people who had to remember words and the Yes/No show how much words were remembered by the 14 men and women and the Letter E shows how much E men and women counted in some words.

Men Yes/No Men Letter E Women Yes/No Women Letter E

4 - 4 - 5 - 6

8 - 6 - 11 - 4

5 - 6 - 14 - 1

14 - 6 - 9 - 0

11 - 3 - 11 - 4

6 - 0 - 10 - 4

9 - 4 - 10 - 3

9 - 8 - 7 - 2

10 - 2 - 9 - 6

8 - 3 - 9 - 5

12 - 4 - 11 4

11 - 5 - 7 - 3

8 - 2 - 12 - 5

4 - 2 - 7 - 1

(The data are in 4 colums, but the forums dont show all the spaces so you have to understand that the first number is Men Yes/No, the second Men E, etc. Theres no negative, the - is just to separate)

______________________________________________________

mean 8.5 3.92 9.42 3.42

SD: -2.43 -3.29 -2.21 -3.37

SE: -0.66 -0.87 -0.59 -0.9 (standard Error)

V 5.90 10.82 4.88 11.35 (Variance)

Under the line is what I found, and those are all the datas we have. We dont have the SD of the population, the mean of the population or anything else.

Any help to do the z test would be VERY apreciated! What I really need is the population or null hyp mean, I really dont know how to get it.

Thanks in advance for all responses!

pr1nce

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