Question: b. Lower control limit R-chart 3 sigma c. upper control d. lower control Refer to Table 56.1 - Factors for Computing Control Chart Limits (3

b. Lower control limit R-chart 3 sigma c. upperb. Lower control limit

R-chart 3 sigma

c. upper control

d. lower control

Refer to Table 56.1 - Factors for Computing Control Chart Limits (3 sigma) for this problem. Sampling 4 pieces of precision-cut wire (to be used in computer assembly) every hour for the past 24 hours has produced the following results: Hour R Hour R Hour R Hour R 1 7 13 8 14 2 3 19 20 21 9 15 3.25" 3.20 3.32 3.29 3.17 2.86 0.71" 1.18 1.48 1.31 1.12 0.37 3.15" 2.65 2.92 2.75 2.83 3.07 0.58" 1.13 0.71 1.38 1.12 0.40 3.01" 2.93 3.02 2.84 2.96 2.64 0.80" 1.36 1.11 0.45 1.38 1.34 4.51" 2.99 2.55 3.18 3.04 2.74 1.56" 1.09 1.03 0.41 1.63 1.02 22 4 5 10 11 16 17 23 24 6 12 18 Based on the sampling done, the control limits for 3-sigma x chart are (round all intermediate calculations to three decimal places before proceeding with further calculations): Upper Control Limit (UCL) = inches (round your response to three decimal places).

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