?Bad Stuff in Children’s Movies Data Set 11 “Alcohol and Tobacco in Movies” in Appendix

Chapter 9, Problem 16

(choose chapter or problem)

Bad Stuff in Children’s Movies Data Set 11 “Alcohol and Tobacco in Movies” in Appendix B includes lengths of times (seconds) of tobacco use shown in animated children’s movies. For the Disney movies, n = 33, \(\bar{x}=61.6\) sec, s = 118.8 sec. For the other movies, n = 17, \(\bar{x}=49.3\) sec, s = 69.3 sec. The sorted times for the non-Disney movies are listed below.

a. Use a 0.05 significance level to test the claim that Disney animated children’s movies and other animated children’s movies have the same mean time showing tobacco use.

b. Construct a confidence interval appropriate for the hypothesis test in part (a).

c. Conduct a quick visual inspection of the listed times for the non-Disney movies and comment on the normality requirement. How does the normality of the 17 non-Disney times affect the results?

0 0 0 0 0 0 1 5 6 17 24 55 91 117 155 162 205

Text Transcription:

\barx=61.6

\barx=49.3