Arana is a company that produces homemade Rotini pasta. They use statistical process control to monitor...
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Arana is a company that produces homemade Rotini pasta. They use statistical process control to monitor the manufacturing process. The company collects five samples, each containing six packs of pasta. Below is the sample data, but the standard deviation of the process output is unknown. If they still want to create an X-bar chart with three-sigma limits (i.e., z = 3), how many samples are outside the control limits? Pack 1 Pack 2 Pack 3 Pack 4 Pack 5 Pack 6 Sample 1 452.3 452.8 456 457.2 457.8 451.8 Sample 2 451.6 451.2 454.6 455.3 452.2 451.9 Sample 3 448.6 455.6 456.5 451.9 455.6 448.3 Sample 4 454.7 451.7 451 452.6 454.7 458.4 Sample 5 448.9 453.4 456.7 456.3 452.4 456 1 2 3 Arana is a company that produces homemade Rotini pasta. They use statistical process control to monitor the manufacturing process. The company collects five samples, each containing six packs of pasta. Below is the sample data, but the standard deviation of the process output is unknown. If they still want to create an X-bar chart with three-sigma limits (i.e., z = 3), how many samples are outside the control limits? Pack 1 Pack 2 Pack 3 Pack 4 Pack 5 Pack 6 Sample 1 452.3 452.8 456 457.2 457.8 451.8 Sample 2 451.6 451.2 454.6 455.3 452.2 451.9 Sample 3 448.6 455.6 456.5 451.9 455.6 448.3 Sample 4 454.7 451.7 451 452.6 454.7 458.4 Sample 5 448.9 453.4 456.7 456.3 452.4 456 1 2 3
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