Question

Previous research has indicated that individuals experiencing anxiety or stress exhibit reduced periods of deep sleep and increased periods of light sleep. An attachment researcher conducted a study to examine the effects of anxious, avoidant, and secure attachment styles on the physiology of sleep. The investigator believed that children with anxious attachment styles would experience more sleep disturbances than children with secure attachment styles. The sleep pattern of 10 secure, 10 anxious, and 10 avoidant children were monitored. It was hypothesized that children who are insecurely attached to their primary caregivers will spend a lower percentage of time in deep (delta) sleep as compared to their secure counterparts. Following is the average amount of time that each child spent in delta sleep, expressed as a percent of total sleep time. For the attachment styles, 1=secure, 2=anxious, and 3=avoidant. Conduct the appropriate test in SPSS OR EXCEL. (5pts)

Participant Attachment Style Delta Sleep

1	1	21
2	1	21
3	1	25
4	1	23
5	1	24
6	1	23
7	1	23
8	1	22
9	1	22
10	1	22
11	2	17
12	2	17
13	2	15
14	2	15
15	2	15
16	2	14
17	2	20
18	2	13
19	2	14
20	2	19
21	3	18
22	3	20
23	3	18
24	3	19
25	3	17
26	3	17
27	3	15
28	3	16
29	3	17
30	3	18

2. State the null and alternative research hypotheses in the appropriate statistical terms.
3. Conduct the appropriate statistical test to determine your conclusion about the null hypothesis. Explain which test you chose and why. Provide all syntax and output.
4. What is the test statistic and significance level for this test?
5. What is your decision regarding the null and why have you come to this conclusion?
6. Are any other tests needed? If so, what additional test would you conduct and why?

Answer 1