(Situation B) a Manufacturing Company Makes Hemostats for Hospital Emergency

(Situation B) A manufacturing company makes hemostats for hospital emergency rooms. The company is interested in implementing statistical process control procedures in its production operation. The production manager believes that the proportion of defective hemostats generated by the process is about 3%. The company collected one sample of 300
consecutively manufactured hemostats each day for 20 days. The data are shown below. $$\begin{array} { c c c c c c } \hline \text { Sample } & \text { Sample Size } & \text { Defectives } & \text { Sample } & \text { Sample Size } & \text { Defectives } \\\hline 1 & 300 & 8 & 11 & 300 & 12 \\2 & 300 & 6 & 12 & 300 & 11 \\3 & 300 & 11 & 13 & 300 & 14 \\4 & 300 & 15 & 14 & 300 & 8 \\5 & 300 & 12 & 15 & 300 & 7 \\6 & 300 & 11 & 16 & 300 & 3 \\7 & 300 & 9 & 17 & 300 & 9 \\8 & 300 & 6 & 18 & 300 & 11 \\9 & 300 & 5 & 19 & 300 & 10 \\10 & 300 & 4 & 20 & 300 & 6 \\\hline\end{array}$$
-Calculate the centerline used in constructing a $\mathrm { p } \text {-chart. }$

A) .0317
B) .0297
C) .0593
D) .0245