# Question

Mr. K. R. Wood, president of Broccoli Enterprises, is interested in the data shown in Table 18.5.4, representing the lengths of broccoli trees after cutting.
a. Find the average, , and the range, R, for each sample.
b. Find the overall average, X, and the average range, R.
c. Find the center line for the chart.
d. Find the control limits for the chart.
e. Draw the chart.
f. Comment on what you see in the chart. In particular, is this process in control? How do you know?
g. Write a paragraph summarizing the situation and defending the action you feel is appropriate.

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• CreatedNovember 11, 2015
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