Critical Reasoning: The growing popularity of computer-based activities was widely expected to result in a decline in television viewing, sinceithad been assumed that people lacksufficient free time to maintain current television-viewing levels while spending increasing amounts of free time on the computer. That assumption, however, is evidently false: In a recent mail survey concerning media use, a very large majority of respondents who report increasing time spent per week using computers reportnochangein time spentwatching television. Which of the following would be most useful to determine in order to evaluate the argument?