Predicting Extraction for an Existing Tower with a Given Number of Steps. An existing tower contains 5.0 theoretical steps. It is desired to predict its performance under the following conditions….
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determine the minimum sample size for the control chart with 3-sigma limits for which the average run length is less than or equal to 5.
A control chart with 3-sigma limits is to be established for the fraction nonconforming
using a centre line of ?? = 0.1.
a) If the process mean shifts to ??1= 0.2, what sample size is required if we wish to detect
this shift on the next sample following the shift with probability at least 0.5, and
have the lower control limit positive? Use Poisson tables if normal approximation is
not good.
b) For the shift to ??1, determine the minimum sample size for the control chart with
3-sigma limits for which the average run length is less than or equal to 5.
