A researcher randomly assigns 33 subjects to one of three groups. Group 1 receives technical dietary information interactively from an on-line website. Group 2 receives the same information from a nurse practitioner, while Group 3 receives the information from a video tape made by the same nurse practitioner.
The researcher looked at three different ratings of the presentation; difficulty, usefulness, and importance to determine if there is a difference in the modes of presentation. In particular, the researcher is interested in whether the interactive website is superior because that is the most cost-effective way of delivering the information.

Run the appropriate analysis of the data and interpret the results.
How could this study have been done differently? Why or why not would this approach be better?
Run the appropriate analysis of the data and interpret the results.
How could this study have been done differently? Why or why not would this approach be better?

Transcribed Image Text:

Usefulness Difficulty Importance Group 20 18 25 8. 23 15 20 22 16 20 6. 22 28 14 13 25 13 24 10 24 18 10 20 17 28 14 2 25 14 26 20 2. 15 15 14 29 4 15 3 3 22 8. 12 27 14 3 21 10 17 16 12 19 23 10 27 23 6. 16 14 22 2. 2. 2. 3. 3. 3. 3. 3.