Telephone inquiries of 100 irs customers are b) According to c-chart, there (is

Question

Telephone inquiries of 100 irs customers are

b) According to c-chart, there (is significant/Not significant) variation in the incidents of incorrect information given out by the IRS telephone operators

Telephone inquiries of 100 IRS "customers" are monitored daily at random. Incidents of incorrect information or other nonconformities (such as impoliteness to customers) are recorded. The data for last week follow: DayNo. of Nonconformities 23 19 15 a) Using 3 standard deviations, the c-chart for the nonconformities is: UCL,-2602 nonconformities (round your response to two decimal places). LCLonconformities (round your response to two dectmal places and if your answer is negative, enterthis value as 0).

Explanation / Answer

a)

Cbar = 73/5

= 14.6

Z=3

LCL = cbar- z* sqrt(cbar)

= 14.6 - 3*3.82

=3.14

b) According to C-chart, there is no significant variation in the incidents of incorrect information given out by the IRS telephone operators because count of non-conformities are within control limit

Day No. of non-conformities 1 8 2 8 3 23 4 19 5 15 Total 73

Related Questions

Navigate

• Browse (All)
• Browse T
• Subjects

---

---

Integrity-first tutoring: explanations and feedback only — we do not complete graded work. Learn more.