1. The upper and lower control limits for the means are:

(a) UCL = 22.64; LCL = 18.56

(b) UCL = 22.88; LCL = 18.51

(c) UCL = 23.033; LCL = 18.367

(d) UCL = 21.0; LCL = 17.0

(e) UCL = 22.98; LCL = 18.02

2. The upper and lower control limits for the Range are:

(a) UCL = 6.846; LCL = 0

(b) UCL = 7.25; LCL = -5.2

(c) UCL = 7.759; LCL = 0

(d) UCL = 6.389; LCL = 0.0

(e) UCL = 7.302; LCL = 0

A quality analyst wants to construct control charts for controlling a packaging process. Each day last week, he randomly selected four packages and weighed them. The data from that activity appears below. Day Package 1 Package 2 Package 3 Package 4 Monday 23 22 24 23 Weight Tuesday Wednesday Thursday 23 21 18 21 19 20 21 20 20 19 20 19 Friday 22 17 22 20