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A clinic provides a program to help their clients lose weight and asks for your help to investigate the effectiveness of the program

A clinic provides a program to help their clients lose weight and asks for your help to investigate the effectiveness of the program

Which statistical analysis should we use?

4. A clinic provides a program to help their clients lose weight and asks for your help to investigate the effectiveness of the program. The agency takes a sample of 15 people, weighing each person in the sample before the program begins and 3 months later.

•Using the data provided, determine whether the weight loss program is effective.

5. The National Association of Social Workers decides to pilot test an intervention to improve life satisfaction among MSW students. The program “DWBH” (Don’t Worry… Be Happy…) is implemented with a convenience sample of 30 participants where life satisfaction is measured by an index score at pretest and posttest phases. The life satisfaction index is operationally defined as a continuous and ratio measure ranging from 0 to 100 with lower scores indicating lower life satisfaction and higher scores indicating higher life satisfaction.

•Using the data provided, determine whether the intervention is effective.

6. On day one, subjects studied and tried to recall 25 words. A week later, the same subjects were asked to recall as many of those same 25 words as they can remember. Using the data provided, please answer the following questions:

•What is the mean (or average) number of words remembered at each time point?

•According to the paired t-test, is there a difference in the number of words remembered after a delay of one week?

•So what conclusion can you draw from these results?

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