An Insurance Company Auditor Takes Eight Samples of 250 Completed

An insurance company auditor takes eight samples of 250 completed forms to establish control limits for the fraction of insurance policy forms that are filled out incorrectly.The data appear in this table:

-What are the upper and lower three-sigma control limits for the appropriate chart?

A) 0.0564,0.0306
B) 20.76,0.09
C) 14.17,7.57
D) 0.0822,0.0048