Nicotine patches are often used to help smokers quit

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Nicotine patches are often used to help smokers quit. Does adding antidepressants to the nicotine patches help? A randomized double-blind experiment assigned 252 to receive a patch that includes the antidepression drug bupropion and 235 smokers who wanted to stop to receive regular nicotine patches. After a year, 84 in the patch & drug group had abstained from smoking and 50 subjects in the nicotine patch group

.p?_{patch & drug}= _______ (3 decimals - this is the treatment group)

p?_patch= ______ (3 decimals - this is the control group)

 

Conclusion:

a. The patch/bupropion combination increases the success rate by this interval over the patch alone 90% of the time.

b. We are 90% confident that the patch/bupropion combination decreases the success rate by this interval over the patch alone.    

c. We are 90% confident that the patch/bupropion combination increases the success rate by this interval over the patch alone.

d. The patch/bupropion combination decreases the success rate by this interval over the patch alone 90% of the time.