Question: Three different point-of-purchase displays are being considered for lottery ticket sales at a chain of convenience stores. Two different locations within the store are also being considered. Each of 18 stores is randomly assigned to one of the 6 treatment/factor combinations. The data recorded are the number of tickets sold during the day of the experiment. At the 0.025 level of significance, draw conclusions about the main and interactive effects on the response variable.

a) What is the response variable? Be precise

b) Citing the p-value, what is the conclusion drawn about the factor “Type of Display”? (

c) Citing the p-value, what is the conclusion drawn about the factor “Position”?

d) Citing the p-value, what is the conclusion drawn about interactive effect?