A sample of ROM computer chips was selected on each of 30 consecutive days, and the number of nonconforming chips on each day was as follows: $$\begin{array} { l l l l l l l l l l }
30 & 16 & 17 & 22 & 19 & 18 & 16 & 23 & 13 & 21 \
18 & 19 & 13 & 25 & 31 & 17 & 12 & 21 & 15 & 29 \
11 & 19 & 25 & 18 & 38 & 20 & 8 & 26 & 12 & 25
\end{array}$$ Determine control limits for a 3-sigma p chart and specify any out-of-control points.

Question

A sample of ROM computer chips was selected on each of 30 consecutive days, and the number of nonconforming chips on each day was as follows: $$\begin{array} { l l l l l l l l l l } 
30 & 16 & 17 & 22 & 19 & 18 & 16 & 23 & 13 & 21 \
18 & 19 & 13 & 25 & 31 & 17 & 12 & 21 & 15 & 29 \
11 & 19 & 25 & 18 & 38 & 20 & 8 & 26 & 12 & 25
\end{array}$$ Determine control limits for a 3-sigma p chart and specify any out-of-control points.

Quizplus · Accepted Answer

The Answer of A sample of ROM computer chips was selected on each of 30 consecutive days, and the number of nonconforming chips on each day was as follows: $$\begin{array} { l l l l l l l l l l } 
30 & 16 & 17 & 22 & 19 & 18 & 16 & 23 & 13 & 21 \
18 & 19 & 13 & 25 & 31 & 17 & 12 & 21 & 15 & 29 \
11 & 19 & 25 & 18 & 38 & 20 & 8 & 26 & 12 & 25
\end{array}$$ Determine control limits for a 3-sigma p chart and specify any out-of-control points.

A Sample of ROM Computer Chips Was Selected on Each