A study was performed looking at the effect of physical activity on cognitive
Table 8.23 Mean difference from baseline (18-month score minus baseline score) among participants with mild cognitive impairment in the ADAS-Cog score*
*A negative change indicates improvement since high values on the testindicate worse cognitive function
Implement the test in Problem 8.79, and report a twosided p-value.
8.79 What test can be performed to compare the mean change in the two groups at 18 months?
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