Using chi-square, test the null hypothesis that the prevalence of serious mental illness does not differ...

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Using chi-square, test the null hypothesis that the prevalenceof serious mental illness does not differ by type of substanceabuse.
A sample of 118 college students is asked whether they areinvolved in campus activities. Using the following cross tabulationdepicting student responses by the region in which their collegesare located, conduct a chi-square test of significance for regionaldifferences.
Campus Activity Participation
RegionÂ Â Â Â InvolvedÂ Â Â Â Â Uninvolved
EastÂ Â Â Â Â Â Â Â Â Â Â 19Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â 10
SouthÂ Â Â Â Â Â Â Â 25Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â 6
MidwestÂ Â Â Â Â Â Â 15Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â 15
WestÂ Â Â Â Â Â Â Â Â Â Â Â Â 8Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â 20

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