Samples of size 50 are taken every hour from a process producing a certain type of item that is either considered defective or not defective. Twenty samples are taken.(a) Construct a control chart for control of proportion defective.(b) Does the process appear to be in control?Explain.

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Number of Number of Defective Defective Items Sample Sample Items 11 12 3 5 3 4 13 2 14 15 16 2 17 18 19 4 20 10 123+50r809