Question: Consider the data of Table 17.1. Suppose that additional samples of size 5 are taken and tensile strength recorded. The sampling produces the following results

Consider the data of Table 17.1. Suppose that additional samples of size 5 are taken and tensile strength recorded. The sampling produces the following results (in pounds per square inch).

1. Plot the data, using the - and R-charts for the preliminary data of Table 17.1.

2. Does the process appear to be in control? If not, explain why.

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