不 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 questions of a large number of IRS telephone representatives to determine the proportion of correct responses. Historically, the average proportion of correct responses has been 70 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: 17, 15, 19, 20, 15, 16, 21, 15, 17, 15, 24, 16, 23, 13, 17, 21, 23, 16, 21, and 16. a. What are the upper and lower control limits for the appropriate p-chart for the IRS? Use z = 3. The UCL equals and the LCL equals (Enter your responses rounded to four decimal places. If your answer for LCLp is negative, enter this value as 0.) Clear all Check answer
不 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 questions of a large number of IRS telephone representatives to determine the proportion of correct responses. Historically, the average proportion of correct responses has been 70 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: 17, 15, 19, 20, 15, 16, 21, 15, 17, 15, 24, 16, 23, 13, 17, 21, 23, 16, 21, and 16. a. What are the upper and lower control limits for the appropriate p-chart for the IRS? Use z = 3. The UCL equals and the LCL equals (Enter your responses rounded to four decimal places. If your answer for LCLp is negative, enter this value as 0.) Clear all Check answer
Advanced Engineering Mathematics
10th Edition
ISBN:9780470458365
Author:Erwin Kreyszig
Publisher:Erwin Kreyszig
Chapter2: Second-order Linear Odes
Section: Chapter Questions
Problem 1RQ
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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 questions of a large number of IRS
telephone representatives to determine the proportion of correct responses. Historically, the average proportion of correct responses has been 70 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:
17, 15, 19, 20, 15, 16, 21, 15, 17, 15, 24, 16, 23, 13, 17, 21, 23, 16, 21, and 16.
a. What are the upper and lower control limits for the appropriate p-chart for the IRS? Use z = 3.
The UCL equals
and the LCL equals
(Enter your responses rounded to four decimal places. If your answer for LCLp is negative, enter this value as 0.)
Clear all
Check answer
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