Question

An experiment randomly assigned 263 adults to watch one of 3 TV programs. One group watched a violent​ program, the second watched a program with sexual content and the last group watched a neutral program. After viewing the program each participant was scored on their recall of the brand names in the commerical messages. The researchers compared the mean recall scores of the three viewing groups with an analysis of variance for a completely randomized design. Complete parts a through f. a. Identify the experimental units in the study. A. The 263 adults who participated in the experiment B. The recall scores obtained C. The three viewer groups D. The television advertisers b. Identify the dependent​ (response) variable in the study. A. The television advertisers B. The recall score C. The three viewer groups D. The 263 adults who participated in the experiment c. Identify the factor and treatments in the study. A. The factor is the advertiser and the treatments are the adults. B. The factor is the type of program and the treatments are a program with violent​ content, a program with sexual​ content, and a neutral program. C. The factor is television and the treatments are the adults who watched a violent​ program, the adults who watched a program with sexual​ content, and the adults who watched a neutral program. D. The factor is the TV network and the treatments are the brand names. d. The sample mean recall scores for the three groups were x overbar Subscript vequals2.08​, x overbar Subscript s Baseline equals 1.71 comma and x overbar Subscript Neutralequals3.17. Explain why one should not draw an inference about differences in the population mean recall scores based on only these summary statistics. A. Nothing about population means can be extrapolated from sample means. B. The sample means are wrong. C. The difference in sample means will always be smaller than the difference in population means. D. There are no measures of variation given.

Answer 1