Reference no: EM131936103

A check cashing service recently insitutued a new customer identifier system after absorbing what is considered a large number of bad checks. The following data present the number of bad checks for the six-month periods before and after the installation of the new system, listed by local of the service:

Location Bad Check before new system Bad Checks After New System

1 12 8

2 15 12

3 27 26

4 31 29

5 9 10

6 16 13

7 7 5

8 14 19

9 25 21

10 19 26

Would you conclude that the new customer identification system resulted in a decrease number of bad checks? Use = 0.05 and an appropriate non-parametric method.