Question	Pre-posting mean	End-posting mean	% improvement
1	2.45	3.36	37
2	2.27	3.64	60
3	1.54	3.27	11
4	1.9	3	58
5	2.27	3.18	40
6	2.45	3	22
7	2.81	3.45	23
8	1.54	3.09	149
9	1.36	3.36	147
10	1.27	3.54	179
11	2.54	3.45	36
12	2.64	3.27	24
13	2.36	2.64	12
14	2.18	3.09	42
15	2.36	3	27
16	2	3.36	68
17	1.91	3.18	66
18	2	3	50
19	1.54	3.09	100