A machine is supposed to fill boxes to a weight of 50 lbs. Every 30 minutes a sample of four boxes is tested; the results are given below.
$$\begin{array} { r | r r r r | r | r }
\mathrm { S } &&& { \mathrm { A } } && \mathrm { M } & \mathrm { R } \
\hline 1 & 49 & 38 & 39 & 45 & 42.75 & 11 \
2 & 52 & 51 & 43 & 61 & 51.75 & 18 \
3 & 56 & 60 & 32 & 52 & 50 & 28 \
4 & 44 & 59 & 46 & 49 & 49.5 & 15\
5 & 51 & 61 & 48 & 45 & 51.25 & 16 \
6 & 45 & 50 & 46 & 4 8& 47.25 & 5 \
7 & 52 & 51 & 45 & 5 & 50.75 & 10 \
8 & 40 & 50 & 53 & 48&47.75 & 13\
9 & 48 & 67 & 60 & 5 1& 56.5 & 19 \
10 & 43 & 50 & 50 & 47 & 47.5 & 7 \
11 & 48 & 30 & 38 & 39 & 38.75 & 18 \
12 & 50 & 46 & 48 & 53 & 49.25 & 7\
13 & 50 & 58 & 56 & 64 & 57 & 14 \
14 & 47 & 52 & 47 & 49 & 48.75 & 5 \
15 & 52 & 57 & 58 & 52&54.75 & 6\
\end{array}$$

Question

A machine is supposed to fill boxes to a weight of 50 lbs. Every 30 minutes a sample of four boxes is tested; the results are given below.
 $$\begin{array} { r | r r r r | r | r } 
\mathrm { S } &&& { \mathrm { A } } && \mathrm { M } & \mathrm { R } \
\hline 1 & 49 & 38 & 39 & 45 & 42.75 & 11 \
2 & 52 & 51 & 43 & 61 & 51.75 & 18 \
3 & 56 & 60 & 32 & 52 & 50 & 28 \
4 & 44 & 59 & 46 & 49 & 49.5 & 15\
5 & 51 & 61 & 48 & 45 & 51.25 & 16 \
6 & 45 & 50 & 46 & 4 8& 47.25 & 5 \
7 & 52 & 51 & 45 & 5 & 50.75 & 10 \
8 & 40 & 50 & 53 & 48&47.75 & 13\
9 & 48 & 67 & 60 & 5 1& 56.5 & 19 \
10 & 43 & 50 & 50 & 47 & 47.5 & 7 \
11 & 48 & 30 & 38 & 39 & 38.75 & 18 \
12 & 50 & 46 & 48 & 53 & 49.25 & 7\
13 & 50 & 58 & 56 & 64 & 57 & 14 \
14 & 47 & 52 & 47 & 49 & 48.75 & 5 \
15 & 52 & 57 & 58 & 52&54.75 & 6\
\end{array}$$

Quizplus · Accepted Answer

The Answer of A machine is supposed to fill boxes to a weight of 50 lbs. Every 30 minutes a sample of four boxes is tested; the results are given below.
 $$\begin{array} { r | r r r r | r | r } 
\mathrm { S } &&& { \mathrm { A } } && \mathrm { M } & \mathrm { R } \
\hline 1 & 49 & 38 & 39 & 45 & 42.75 & 11 \
2 & 52 & 51 & 43 & 61 & 51.75 & 18 \
3 & 56 & 60 & 32 & 52 & 50 & 28 \
4 & 44 & 59 & 46 & 49 & 49.5 & 15\
5 & 51 & 61 & 48 & 45 & 51.25 & 16 \
6 & 45 & 50 & 46 & 4 8& 47.25 & 5 \
7 & 52 & 51 & 45 & 5 & 50.75 & 10 \
8 & 40 & 50 & 53 & 48&47.75 & 13\
9 & 48 & 67 & 60 & 5 1& 56.5 & 19 \
10 & 43 & 50 & 50 & 47 & 47.5 & 7 \
11 & 48 & 30 & 38 & 39 & 38.75 & 18 \
12 & 50 & 46 & 48 & 53 & 49.25 & 7\
13 & 50 & 58 & 56 & 64 & 57 & 14 \
14 & 47 & 52 & 47 & 49 & 48.75 & 5 \
15 & 52 & 57 & 58 & 52&54.75 & 6\
\end{array}$$

A Machine Is Supposed to Fill Boxes to a Weight