A researcher would like to estimate how much difference in cigarette smoking results from viewing graphic...
A researcher would like to estimate how much difference in
cigarette smoking results from viewing graphic videos (including an
autopsy) on the harmful effects of smoking. A sample of 16 smokers
is obtained. Half of the smoker (n=8) view the video and the other
half (n=8) serves as a control group. The number of packs of
cigarettes each person smoked during the following week is
recorded. The data are as follows:
Control: M=17.5, SS=122
Video Viewers: M=8.1, SS=102
Part 1: Use the sample data to make a point estimate of the mean
difference in smoking behavior between the control group and the
video viewers.
Part 2: Make an interval estimate of the mean difference so that
you are 80% confident that the population mean difference is in
your interval. WHAT is the standard error?
Part 3: What is the critical t?
Part 4: What is the lower bound?
Part 5: What is the upper bound?
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A researcher would like to estimate how much difference in
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