The numerator or MST degrees of freedom are 3 and the denominator or MSE degrees of freedom are 18. The total number of observations in the completely randomized design must equal 20.

A box plot is a graphical representation of the 5-number summary.

Given the following:
Determine:
a) The amount of mark-up.
b) The amount of operating (overhead) expenses.
c) The operating profit or loss.
d) The rate of mark-up on cost.
e) The rate of mark-up on selling price.