Different countries spend different amounts of money in support of noncommercial media. Of the following countries, which spends the least?

__________ are paid television programs that promote a product

a) Direct marketing ads b) Soft-sell ads c) Infomercials d) Product placements

What type of study does this notation describe: R O1X O2?

a) Posttest only b) Pretest only c) Pretest-posttest d) Latin Square posttest only