completed forms from a particular department of an insurance compnay were sampled daily to check the performance quality of that department. To establish a tentative norm for the deparment, one sample of 100 units was collected each day for 10 day, with these results:

Sample...........sample size..............# of forms with errors
1...................100................................10
2...................100................................5
3...................100................................5
4...................100................................8
5...................100................................4
6...................100................................4
7...................100................................15
8...................100................................3
9...................100................................8
10.................100.................................8

a)create a control chart that shows the errorsper 100 with 95.5 confidence.

b)how many samples are out of control?

c)what does that mean to management?