The given table refers to a survey in which senior high school students were ran

Question

The given table refers to a survey in which senior high school students were randomly sampled. It cross-tabulates whether a student had ever smoked cigarettes and whether a student had ever used marijuana. Analyze these data by (a) finding and interpreting conditional distributions with marijuana use as the response vaiable and (b) reporting all five steps of the chi-squared test of independence. Marijuana Cigarettes Yes No Yes 908 41 No 583 744 a. Input each percentage in the table to the right Marijuana Cigarettes Yes No Yes No Round to one decimal place as needed.)

Explanation / Answer

total is (908+583+41+744)=2276

for 1st column and 1st row it is 908/2276=0.3989 or 39.9%

for 1st column and 2nd row it is 41/2276=1.8%

for 2nd column and 1st row it is 583/2276=25.6%

for 2nd column and 2nd row it is 744/2276=32.7%

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