Chantix is a drug used as an aid for those who want to stop smoking. The adverse reaction of nausea has been studied in clinical trials, and the table before summarizes results (based on data from Pfizer). Use a 0.01 significance level to test the claim that nausea is independent of whether the subject took a placebo or Chantix. Does nausea appear to be a concern for those using Chantix?
Nausea with Placebo : 10
Nausea with Chantix: 30
No nausea with placebo: 795
No nausea with Chantix: 791
Null hypothesis: nausea is independent of whether the subject took a placebo or Chantix.
Alternative hypothesis: nausea is dependent on whether the subject took a placebo or Chantix.
This is a chi square test.
The degree of freedom is ...
The expert examines the chi squared test at the 0.01 significance levels.