7. Calculate recommended sample sizes for control charts for the following cases: a. A defectives chart with LCL > 0 for p = 0.05 b. A proportion defective chart that detects a shift from p = 0.03 to p = 0.05 with 50% probability. c. A defects chart that will produce no more than 5% zeros on the control chart when the number of defects per unit is λ = 1.2

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