1. Table 1 show the actual temperature (OF) of 6 cups of coffee bought from a gourmet coffee shop on each of the last 10 days.
(a) Plot a X-bar and R charts and find out of the process in control?
(b) Based on the standard provided, calculate the process capabilities indices. Briefly explain the results. ” Federal health regulations require that coffee temperatures be between 160 and 180 degrees Fahrenheit”.
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