### Creating p chart to monitor the process

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##### Reference no: EM13104611

The Shoe Store manufactures athletic shoes. The company wants to establish a p-chart to monitor the production process using Z = 3.00. The company has taken a sample of 50 shoes every 4 hours for a work week of five days. Since the company runs two 8-hour shifts each day, this will result in 20 samples. The sample results are as follows.

 Sample Number of Defectives Proportion Defective Sample Number of Defectives Proportion Defective 1 0 0.00 11 4 0.08 2 1 0.02 12 1 0.02 3 0 0.00 13 1 0.02 4 3 0.06 14 2 0.04 5 2 0.04 15 2 0.04 6 5 0.10 16 3 0.06 7 3 0.06 17 4 0.08 8 2 0.04 18 1 0.02 9 1 0.02 19 5 0.10 10 0 0.00 20 2 0.04

The population proportion defective is not known. Construct a p-chart to monitor this process.

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