In a study of smoking cessation by Gold et al. (A-26), 189 subjects self-selected into three treatments:

nicotine patch only (NTP), Bupropion SR only (B), and nicotine patch with Bupropion SR

ð Þ NTP þ B . Subjects were grouped by age into younger than 50 years old, between 50 and 64, and 65 and older. There were 15 subjects younger than 50 years old who chose NTP, 26 who chose B, and 16 who chose NTP þ B. In the 50–64 years category, six chose NTP, 54 chose B, and 40 chose NTP þ B. In the oldest age category, six chose NTP, 21 chose B, and five chose NTP þ B. What statistical technique studied in this chapter would be appropriate for analyzing these data? Describe the variables involved as to whether they are continuous, discrete, quantitative, or qualitative. What null and alternative hypotheses are appropriate? If you think you have sufficient information, conduct a complete hypothesis test. What are your conclusions?