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The 2009 National Household Survey on drug use and health reported the number (out of 1000)...

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Statistics

The 2009 National Household Survey on drug use and healthreported the number (out of 1000) of three age groups: 12-17years
old, 18-25 years old, and 26 years old, who reported usingcannabis (marijuana and hashish). The survey was repeated in 2014,and
the data are presented in the table below. Do a chi-squarecontingency analysis to see if the reported usage has changed overtime or is
reported usage independent of year?
Subjects12-1718-2526+
2009100212130
2014164526461
Ho:
Ha:
test-statistic:
df:
Exact P value for the test-statistic
Conclusion relative to the hypothesis:

Answer & Explanation Solved by verified expert
4.1 Ratings (586 Votes)
The following crosstabulation have been provided The row andcolumn total have been calculated and they are shown below1217182526Total200910021213044220141645264611151Total2647385911593The expected values are computed in terms of row and columntotals In fact the formula is where Ri    See Answer
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