1) Must show all use of formulas and work leading to your final answer for credit. Please write legibly and label all answers.

A counselor at the local chapter of Impulse Buyers Anonymous had just conducted a weekend workshop on how to be less suggestible. To find out if the workshop had any effect, she had each participant fill out a questionnaire that measured suggestibility, with high scores indicating high suggestibility. (Several such questionnaires exist.) Suppose that the national norm (mean) for the questionnaire that was used was 25 and that the participants produced the following statistics. Construct a 95 percent confidence interval and interpret the data. Also add a sentence of interpretation that tells about the effect of the workshop. This is not a t test... Show your work on UL, LL, standard error, critical value, etc. for credit.

= 242 2= 5,413 N = 11

2)The Rathus Assertiveness Assessment is a 30-item questionnaire. The mean score for women on this instrument is 8. Suppose that the Psychology Department at your college is in charge of personal development and conducted a six-week course in assertiveness training to increase assertiveness in women. You believe that women finishing this course will have greater assertiveness and that the course is effective. At the end of the course the following scores were obtained from the 10 women who completed the course. Please answer the questions below.

20

36

0

44

16

-6

50

28

24

8

= 220 2= 7848

1. Write your null and alternate hypothesis using stat symbols or in a sentence format
2. Is this a one tail or a two tail test?
3. What is the df and t critical value?
4. Perform a t test (including, basic calculations of sums... s(hat), standard error leading to t_obt value) (1.5pts)
5. Calculate effect size index. (.5 pt)
6. Write your interpretations based upon your results of this data in the format provided for this test. Remember to begin with reject or fail to reject ...and insert all necessary stat symbols and values for maximum credit. (remember the interpretation in English... per text/video examples) (3 points)
7. Type I or Type II error? (.5 pt)