A manufacturing company operates three shifts daily. Each shift produces two models: A and B. A random sample of daily production has been taken, and the results are in the file Shift Production.
a. Develop a box and whisker plot that compares daily production by shift and model.
b. Is there a difference in the median output by shift? Is there a difference in the median output by model?
c. Does the variation in daily production appear to be symmetric or skewed across the shifts and model?

d. Are there any outliers in the data?