$12\mathrm{.}15$

FILE A vending machine company sells its packaged foods in a variety of different machines. The company is considering three types of new vending machines. Management wants to know if the different machines affect sales. These vending machines are designated as J$-1000,$ D$-320,$ and UV$-57.$ Management also wants to know if the position of the machines indoors or outdoors affects sales. Each of six similar locations was randomly assigned a machine and position combination. The following data are the number of purchases over $4$ days.

$\backslash$table$[[$Position$/$Machine$,$J$-1000,$D$-320,$UV$-57],[$Inside$,33,40,30,31,29,28,33,33,47,39,39,45$