Question: A quality control inspector is studying the alternative sampling plans (n = 5, a = 1) and (n = 25, a = 5). a. Sketch

A quality control inspector is studying the alternative sampling plans (n = 5, a = 1) and (n = 25, a = 5).

a. Sketch the operating characteristic curves for both plans, using lot fractions defective .05, .10, .20, .30, and .40.

b. As a seller producing lots with AQL = .10, which of the two sampling plans would you prefer? Why?

c. As a buyer wanting to protect against accepting lots with fraction defective exceeding p₁ = .30, which of the two sampling plans would you prefer? Why?

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