Question

1. An experimenter investigated the effects of sensitivity training on police officers’ effectiveness at resolving domestic disputes.  She randomly sampled a group of police officers who had completed a sensitivity course and a group of officers who had not.  Participants were tested on their ability to successfully resolve a simulated domestic dispute.  The scores below were obtained.  Test the researcher’s hypothesis with α = .0

Zero Hours of Course (NT)	10 Hours of Course (T)
11	13
16	16
10	14
12	9
9	11
15	13
13	15
13	15
9	12
12	11

1. Use the 5-step procedure test the hypothesis. (22 points)
2. Calculate the 99% confidence interval.  (4 points)
3. Calculate and estimate the effect size. (4 points)
4. Using the appropriate power table in the textbook, what is the approximate power of this test?  Discuss at least three ways that you could increase the power of the test.    (10 points)
5. (This is for psychology statistics t-tests) (i had already asked this question once before and they noted that i needed more information about a power table however this is all the information i was provided and not sure what power table to include)

Answer 1