Question: A quality analyst wants to construct a sample mean chart for controlling a packaging process. Each day last week, he randomly selected four packages and

A quality analyst wants to construct a sample

A quality analyst wants to construct a sample mean chart for controlling a packaging process. Each day last week, he randomly selected four packages and weighed each. The data from that activity appears below. Weight Day Package 1 Package 2 Package 3 Package 4 Monday 24 Tuesday 23 21 21 Wednesday 20 Thursday Friday 18 23 22 23 19 20 14. The mean of all sample means is: A) 20 B) 23 C) 19 D) 21 E) 20.6 15. Calculate 30 upper and lower control limits for the Mean. (a) UCL = 23.05; LCL = 18.15 (b) UCL = 22.64; LCL = 18.56 (c) UCL = 26.6; LCL = 14.6 (d) UCL = 22.21; LCL = 18.98 (e) UCL = 23.7; LCL = 17.5 16. Is this process in control? (a) Monday sample is above the UCL; all others are within limits. The process is out of control. (b) Tuesday sample is above the UCL; all others are within limits. The process is out of control. (c) Wednesday sample is below the LCL, all others are within limits. The process is out of control. (d) Thursday sample is below the LCL; all others are within limits. The process is out of control. (e) All samples are within limits. The process is in control

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