B) Is the tax information process in statistical control?

Since there is ________, the process is considered to be _____(in/ out of) statistical control.

The IRS is concerned with improving the accuracy of tax information given by its representatives over the telephone. Previous studies involved asking a set of 25 responses has been 75 percent. Recently, IRS representatives have been receiving more training. On April 26 , the set of 25 tax questions were again asked of 20 randomly selected IRS telephone representatives. The proportions of correct answers were: 22,16,19,16,21,16,21,20,17,20,23,15,22,19,17,15,23,14,21,and21. a. What are the upper and lower control limits for the appropriate p-chart for the IRS? Use z=3. The UCLp equals and the LCLp equals (Enter your responses rounded to four decimal places. If your answer for LCLp is negative, enter this value as 0 .)