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A doctor would like to study the effect of viewing graphic videos on smoking. A sample of 16 smok


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A doctor would like to study the effect of viewing graphic videos on smoking. A sample of 16 smokers is obtained. half of the smokers (n=8) view graphic videos(including an autopsy) on the harmful effects of smoking and the other half (n=8) serves as a control group(that is, do not view the videos). The number of packs of cigarettes each person smoked during the following week is recorded. The data are as follow:


Controls

M=17.5

SS=122


Video Viewers

M=8.1

SS=102


a. Use the sample data to make a 95% confidence interval estimate of the mean difference in smoking behavior between the control group and the video viewers.


b. Do the data indicate that viewing graphic videos on smoking reduce smoking? Test at the .05 level of significance.


A doctor would like to study the effect of viewing graphic videos on smoking. A sample of 16

 

smokers is obtained. half of the smokers (n=8) view graphic videos(including an autopsy) on the

 

harmful...

 


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