SCENARIO 15-1
A local newspaper has 10 delivery boys who each deliver the morning paper to 50 customers every day.The owner decides to record the number of papers delivered on time for a 10-day period for one of the delivery boys and construct a p chart to see whether the percentage is too erratic. $$\begin{array} { c c }
\text { Day } & \begin{array} { c }
\text { Number of Papers } \
\text { DeliveredonTime }
\end{array} \
\hline 1 & 46 \
2 & 45 \
3 & 46 \
4 & 45 \
5 & 43 \
6 & 48 \
7 & 46 \
8 & 49 \
9 & 48 \
10 & 47
\end{array}$$
-Referring to SCENARIO 15-1, what is the numerical value of the lower control limit for the pchart?
A)0.920
B)0.911
C)0.815
D)0.798

Question

SCENARIO 15-1
A local newspaper has 10 delivery boys who each deliver the morning paper to 50 customers every day.The owner decides to record the number of papers delivered on time for a 10-day period for one of the delivery boys and construct a p chart to see whether the percentage is too erratic. $$\begin{array} { c c } 
\text { Day } & \begin{array} { c } 
\text { Number of Papers } \
\text { DeliveredonTime }
\end{array} \
\hline  1 & 46 \
2 & 45 \
3 & 46 \
4 & 45 \
5 & 43 \
6 & 48 \
7 & 46 \
8 & 49 \
9 & 48 \
10 & 47
\end{array}$$
-Referring to SCENARIO 15-1, what is the numerical value of the lower control limit for the pchart?
A)0.920
B)0.911
C)0.815
D)0.798

Quizplus · Accepted Answer

The lower control limit (LCL) for a p-chart is calculated using the formula: LCL = p̄ - 3√(p̄(1-p̄)/n), where p̄ is the average proportion of successes and n is the sample size. Here, p̄ = (46+45+46+45+43+48+46+49+48+47)/(10*50) = 0.463. Using this in the formula gives LCL ≈ 0.815.

SCENARIO 15-1 a Local Newspaper Has 10 Delivery Boys Who

SCENARIO 15-1
a Local Newspaper Has 10 Delivery Boys Who