Question

Consider the situation described in Exercise 7.70. (c) = 0.533c
(a) Find two-sigma control limits and compare these with the control limits found in art (a) of exercise 7.70.
b) Find the a-risk for the control chart with two-sigma control limits and compare with the results of part (b) of Exercise 7.70.
(c) Find the β-risk for c – 2.0 for the chart with two-sigma control limits and compare with the results of part (c) of Exercise 7.70.
(d) Find the ARL if c = 2.0 and compare with the ARL found in part (d) of Exercise 7.70.


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  • CreatedNovember 06, 2015
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