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MCS,PHD
Argosy University/ Phoniex University/
Nov-2005 - Oct-2011
Professor
Phoniex University
Oct-2001 - Nov-2016
In Example 16.14, there was only one server of each sex. What problem does this cause in the interpretation and generalization of the results? How would you have designed the experiment to better examine the interaction between sex of the server and drawing a happy face (or not)?
Example 16.14
Happy Faces and Restaurant Tips When a restaurant server writes a friendly note or draws a “happy face” on your restaurant check, is this just a friendly act, or is there a financial incentive? Temple University psychologists conducted a randomized experiment to investigate whether drawing a happy face on the back of a restaurant bill increased the average tip given to the server (Rind and Bordia, 1996).
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