one-way anova and hypothesis , Basic Statistics

Suppose we wanted to compare the somatic complaints (as measured on a scale known as the Physical Symptom Survey or PSS) of three groups of people; nonsmokers, smokers, and people who recently quit smoking.  Using the following data for PSS scores, do a one-way ANOVA to test the hypothesis that the population means are equal:

Nonsmokers

Smokers

Quitters

19

26

37

23

29

32

17

22

27

20

30

41

26

23

38

1. What are the means and SDs for the three groups?

2. What is the SS total? SS between and SS within?

3. What is the MS between? MS within?

4. What is the df for between, df for within?

5. What is the value of F? Using an alpha of .05, is the F statistically significant?

6. Attach your SPSS output 

Posted Date: 3/13/2013 2:03:03 AM | Location : United States







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