Please answer the entire question before accepting this question. I really NEED help; practice for my final. Thank you. this is a three part question.

Use this information to answer the next THREE questions, based on the work of 20 IRS auditors, each handling 100 files, we find that the total number of mistakes in handling files is 220 The average proportion of defect is: 22 0.22 011 0 0.11 The standard deviation is 0.003 .0156 03 0.06996 Question 63 (Mandatory) (1 point) Listen The upper control limit is (2-3): 0.2 0.119 0.17 0.017