Use the following to answer questions 6-8
A marketing researcher was studying the effect of a supermarket display on sales of anew product. There were two designs for the display: the first had greater visualappeal, and the second contained more factual information about the product. eachtype of display could be made in three sizes, small, medium, or large. Eighteensupermarkets were available for the study, and three supermarkets were selected atrandom for cach combination of display design and size. The number of unites of theproduct sold over a tow week period was recorded for each supermarket. For theresulting data, a two-way ANOVA was run with the partial ANOVA table given below.