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Please show ALL work. Here isthedataset of people's scores on a measure of aptitude in research methods: 15, 22, 38, 25, 33, 18, 22, 20,

Please show ALL work. Here isthedataset of people's scores on a measure of aptitude in research methods:

15, 22, 38, 25, 33, 18, 22, 20, 35, 30, 31, 28, 19

In addition to these scores, researchers asked participantsif they had ever taken a research methods course before. Here is the dataset of scores broken down into two groups; those who have taken aresearch methods course and those who have not.

Have Taken Research Methods Course

Have NOT Taken Research Methods Course

22

15

38

25

33

18

35

22

30

20

31

19

28

From these data, calculate the following:

Question 1: Determine an appropriate hypothesis and explain why you think the hypothesis is appropriate. State the null hypothesis.

Question 2: Calculate the mean and variance for each group.

Question 3: Calculate the t-score.

Question 4: Calculate the degrees of freedom.

Question 5: Would you use a one-tailed or two-tailed test? Why?

Question 6: Using a .05 significance level, find the t-value needed to reject the null hypothesis.

Question 7: What is your conclusion about your hypothesis?

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