The table shows before and after data for cases in a study. This is paired data so we work with the differences. Find the difference (Before - After) for each data pair and then find the meanxd, the standard deviationsd, and the sample sizendfor the differences. Enter the exact answers for the differences,xdandnd, and round the answer forsdto three decimal places.

Case	1	2	3	4	5
Before	16	10	22	14	22
After	16	12	10	10	15
Difference	Enter your answer;	Enter your answer;	Enter your answer;	Enter your answer;	Enter your answer;

xd=_________

sd=__________;

nd=__________;