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A chocolate factory has weighed 4 chocolate truffles coming out of production over 5 working days to obtain the following data, weights are in grams.
A chocolate factory has weighed 4 chocolate truffles coming out of production over 5 working days to obtain the following data, weights are in grams. a) Group the data by day and find the sample average and range for each of the five samples.(4 pts) b) Find the center lines for X-bar and R chart (2 pts)
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