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."

Acontractor was awarded a purchase order for commercial items for $1.5 million under the authority of far subpart 13.5. the purchase order was issued in november 2010 and containedall applicable clauses that were current as of the date of the purchase order. under the purchase order, the contractor is required to comply with a small business subcontracting plan that contains all of the required elements. which of the following is true? a.the contractor must submit a standard form 294, subcontracting report for individual contracts. b.the contractor must submit an individual subcontracting report through the electronic subcontracting reporting system (esrs). c.the contractor may submit either an sf 294 or report its subcontracting through esrs. d.the contractor is not required to submit any subcontracting reports.