As a quality engineer for a craft store, you are responsible for the results of the glazing process on the pots and plates you produce. To attract and keep your customers, you must ensure that your process provides a glazing thickness of not less than $4\mathrm{.}2$ mm but not more than $4\mathrm{.}8$ mm$.$ The variable that impacts this quality characteristic is the temperature of the oven where the pieces are processed to obtain the desired glazing layer finish.

As part of the quality assurance function, you want to adopt a control chart to evaluate the performance of the baking process, which is done at a temperature of $1100\backslash$deg F$.$ You start the project by performing the following activities: