In the experiment of the previous exercise, the 336 subjects are labeled 001 to
ID: 3206513 • Letter: I
Question
In the experiment of the previous exercise, the 336 subjects are labeled 001 to 336. labels are selected at random by software, with the first 84 selected assigned to view TV show 1, the next 84 to view TV show 2, and the next 84 to view TV show 3. The 84 remaining subjects view TV show 4. This is a matched pairs design because subjects are matched to the TV shows. completely randomized design. block design with TV shows representing the four blocks. The Community Intervention Trial for Smoking Cessation asked whether a community-wide advertising campaign would reduce smoking. The researchers located 11 pairs of communities, each pair similar in location, size, economic status, and so on. One community in each pair participated in the advertising campaign and the other did not. This is an observational study. a matched pairs experiment. a completely randomized experiment. To decide which community in each pair in the previous exercise should get the advertising campaign, it is best to toss a coin. choose the community that will help pay for the campaign. choose the community with a mayor who will participate.Explanation / Answer
9.22 b) Completely randomiised design
9.25 (b) matched pairs experiments
9.26 a) toss a coin