2. The District of Columbia Police has recently tried to increase the number of arrests made by police officers. You want to know if arrests have actually increased. You look at a sample of 6 police officers, and measure the number of arrests each month for the month before and after the policy change. Test the null hypothesis that the before and after number of arrests are equal, against the alternative that the number of arrests are higher after the policy change. Use an alpha of .01. What are your conclusions?

Person	Before x1	After x2
A	1	3
B	3	2
C	0	2
D	2	3
E	0	2
F	1	4