b.) Suppose you have an alphabetized list of the subjects numbered 1 through 22. Carry out the randomization required by our design and report the results. 1.) Alvarez 2.) Bonilla 3.) Cruz 4.) Castillo 5.) Delgado 6.) Florez 7.) Gomez 8.) Hernandez 9.) Hacienda 10.) Izturrez 11.) Lima 12.) Luz 13.) Mavia 14.) Moreno 15.) Nunez 16.) Pujols 17.) Reyes 18.) Rincon 19.) Reyes 20.) Sanchez 21.) Tavarez 22.) Uribe 4.) In an experiment to determine whether suggesting a number of items to 4 per purchase (e.g. “limit the number of items purchased and Adjustment Model of customer”) increases (“An Anchoring Purchase data were collected at Journal of Marketing Research[1999]:71-81), Quantity Decision,” three separate stores. At one store, the display of on sale soup had a sign that limit per said “No at another store the sign said 4 per and the third store had a sign that read person”; “Limit person” 12 per the second and third days of the experiment the signs were switched so that “Limit person.” On each store had each treatment for one day only. a.) Why did the researchers rotate the 3 treatments across the 3 different stores for 3 days? b.) the results of this study showed that there was no day-to-day or store-to-store differences in the quantity of soup purchased. Also, in the stores with the 12-item limit, the average number of cans purchased per person was twice that of the no-limit or 4-item limit. (7 instead of 3.5). This difference was large enough for researchers to conclude that the results were not due to chance alone. If a grocery store manager asked you how he should market the soup, what would you say? c.) If a grocer asked you how she should market lettuce, would you say (based on the results of this study) that a limit of 12 items per person would increase sales over a no limit provision. Explain.
b.) Suppose you have an alphabetized list of the subjects numbered 1 through 22. Carry out the randomization required by our design and report the results. 1.) Alvarez 2.) Bonilla 3.) Cruz 4.) Castillo 5.) Delgado 6.) Florez 7.) Gomez 8.) Hernandez 9.) Hacienda 10.) Izturrez 11.) Lima 12.) Luz 13.) Mavia 14.) Moreno 15.) Nunez 16.) Pujols 17.) Reyes 18.) Rincon 19.) Reyes 20.) Sanchez 21.) Tavarez 22.) Uribe 4.) In an experiment to determine whether suggesting a number of items to purchase (e.g. “limit 4 per customer”) increases the number of items purchased (“An Anchoring and Adjustment Model of Purchase Quantity Decision,” Journal of Marketing Research[1999]:71-81), data were collected at three separate stores. At one store, the display of on sale soup had a sign that said “No limit per person”; at another store the sign said “Limit 4 per person” and the third store had a sign that read “Limit 12 per person.” On the second and third days of the experiment the signs were switched so that each store had each treatment for one day only. a.) Why did the researchers rotate the 3 treatments across the 3 different stores for 3 days? b.) the results of this study showed that there was no day-to-day or store-to-store differences in the quantity of soup purchased. Also, in the stores with the 12-item limit, the average number of cans purchased per person was twice that of the no-limit or 4-item limit. (7 instead of 3.5). This difference was large enough for researchers to conclude that the results were not due to chance alone. If a grocery store manager asked you how he should market the soup, what would you say? c.) If a grocer asked you how she should market lettuce, would you say (based on the results of this study) that a limit of 12 items per person would increase sales over a no limit provision. Explain.
experimental_design_exercises_-_solutions.docx