Mathematics Homework Help

Please make sure it’s correct.(Q-7 to 16)

A study aims to test the effect of price discount and package size on the sales of saltine
crackers. Three levels of discount (10%, 20% and 30%) and three package sizes (Small/Medium/Large)
are tested. Five stores are randomly assigned to each combination of discount and package
size. The sample means of sales in thousand dollars observed over an entire month for each
discount-size combination are reported in Table 1.