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A Sample of 100 Items Is to Be Selected from a Batch

Question 55

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A sample of 100 items is to be selected from a batch consisting of 5000 items. The batch will be accepted if the sample contains at most two defective items.
a. Calculate the probability of lot acceptance, P(A), for p = .10, .02, …, .05, and sketch the OC curve.
b. Sketch the OC curve in problem 85 above (with n = 50, and c = 1) and the OC curve in part (a) of problem 86 (with n = 100, and c = 2) on the same set of axes. Which of the two plans is preferable (leaving aside the cost of sampling) and why?

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a.
P(A) = blured image = blured image blured image b.
For values of p quite ...

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