1. The residential division of Prism's high-speed Internet service uses one advertising agency, while its commercial division uses another. Two analysts, Andy and Brad, are asked to test the effectiveness of the two agencies. Andy proposes an A/B test that compares the click-through rates per ad of the two agencies. Brad proposes a difference-in-difference test in which the budgets for both agencies are increased by 50%, and the percentage changes in the click-through rates are compared.

True or False: Andy's proposal is more likely than Brad's to suffer from bias due to issues with "representativeness."

2.Your company has a customer who is shutting down a production line, and it is your responsibility to dispose of the extrusion machine. The company could keep it in inventory for a possible future product and estimates that the reservation value is $200,000. Your dealings on the secondhand market lead you to believe that if you commit to a price of $300,000, there is a 0.5 chance you will be able to sell the machine. If you commit to a price of $400,000, there is a 0.2 chance you will be able to sell the machine. If you commit to a price of $500,000, there is a 0.1 chance you will be able to sell the machine. These probabilities are summarized in the following table.

For each posted price, enter the expected value of attempting to sell the machine at that price. (Hint: Be sure to take into account the value of the machine to your company in the event that you are not be able to sell the machine.)

Posted Price Enacted Value (35) Probability of Sale (5) Assume you must commit to one pasted price. In order to maximize the expected prot of the potential sale, which [305th price would you commit to in order to maximize the expected value 0f the potential sale of the machine? 0 $300,000 0 $400,000 0 $500,000