14. In Chapter 8 (pogo 233) we presented an example ne a research study examining how an antioxidant supplement (such as hlucherries) affects the cognitive functioning of elderly adults In the example, we compared one sample of adults who received the blueberry supplement with the general population. An alternative approach to the research question as to use a repeated-measures design-

Suppose a researcher obtains a sample of n - 16 adults who are between the ages of 65 and 75.

The researcher uses a standardized test to measure cognitive performance for each individual The participants then begin a 2-month program im which they receive daily doses of the blueberry supplement, At the end of the 2-month period, the researcher again measures cognitive performance for each participant. The results show an average increase in performance of My =7.4 wich SS - 1215. Doen this result support the conclusion that the antioxidant supplement has a significant effect on cognitive perfomance? Lhe a two-tailed test with « 05.