Question

6. Are the 4 steps of hypothesis testing for the independent t test different from the other statistical tests that we have learned?

8. What are we hoping that happens to the data of the experimental group?
a. the curve takes on a new shape
b. the data shifts over on the curve
c. the data becomes elevated on the y axis
d. no change to any parameter

14. True or False: You can have a negative number for the Cohen’s d or for the percentage of variance explained value?

16. If a you had two groups in a study Group 1 had a n=25 and Group 2 had a n=21, what would the df be for the study?

20. A beer store wanted to test the difference on drinking habits if a younger group of 21-30 years old (n=8) to an older group of 50 to 60 years old (n=10). The store took a survey of beers per year each person had in both groups and found the following data:

21-30 group  50-60 group

50	35
17	64
25	39
88	75
53	61
62	89
36	45
29	35
	29
	78

a. State the hypotheses of the study.
b. Find the critical t value for this study at an alpha level at α=.05.
c. Compute the independent t test
d. If significant, perform a percentage of variance test.
e. State the results in APA format (numbers and words) and don’t forget to include all parts in the sentence and the direction of the results.

Answer 1

6. No, it is same for other statistical tests.

8. d. No change to the parameter. (The required data is not provided to answer the question but no matter what, the population parameter never changes)

14. No, we can not have a negative number for percentage of variance explained value.

16. The required degree of freedom= 21+25 - 2= 44.

Note: we are legally bounded to solve only 1st 4 parts of the question
Thankyou.