Halloween is a holiday that is capturing increasing sales in home dcor. You design a study that uses an email invitation to a specialized online collection of Halloween dcor items. To half of your customer list the email subject line reads: A unique collection of Halloween items to decorate your home. To the other half, your email subject line reads: This Halloween collection is available for only a short time. You are designing a(n) _____.

Multiple Choice:

reporting study

descriptive study

ex post facto study

causal-explanatory study

experiment