The following and s charts based on n =4 have shown statistical control: Chart s Chart UCL = 710 UCL = 18.08 Center line = 700 Center line = 7.979 LCL = 690 LCL = 0 (a) Estimate the process parameters...

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The followingandscharts based onn=4 have shown statistical control:
























Chart





s

Chart



UCL = 710



UCL = 18.08



Center line = 700



Center line = 7.979



LCL = 690



LCL = 0



(a) Estimate the process parameters μ and σ.


(b) If the specifications are at 705 ??15, and the process output is normally distributed, estimate the fraction nonconforming.


(c) For thechart, find the probability of a type I error, assuming σ is constant.


(d) Suppose the process mean shifts to 693 and the standard deviation simultaneously shifts to 12. Find the probability of detecting this shift on the chart on the first subsequent sample.


(e) For the shift of part (d), find the average run length.



Answered Same DayDec 29, 2021

Answer To: The following and s charts based on n =4 have shown statistical control: Chart s Chart UCL = 710 UCL...

Robert answered on Dec 29 2021
111 Votes
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