Question

1) My current favorite 10 whole numbers less than 100 are the following: { 7, 11, 19, 25, 29, 37, 37, 50, 70, 89} .

Please compute the a) mean, b) median, c) mode, d) population standard deviation and e) interquartile range of this set of my favorite numbers.

Hint: put these numbers in a list on your calculator (e.g., L1) and then use the 1-Var Stats command. Don't forget to do part e).

2)

Case study: Nicotine patch therapy for smoking cessation combined with physician advice and nurse follow-up.

This study compared the smoking cessation rates for 240 smokers randomly assigned to use a nicotine patch versus a placebo patch.

Higher smoking cessation rates were observed in the active nicotine patch group at 8 weeks (46.7% vs 20%) (P < .001) and at 1 year (27.5% vs 14.2%) (P = .011). (Hurt et al., 1994, p. 595) Therefore, rates of quitting are significantly higher using a nicotine patch than using a placebo patch after 8 weeks and after 1 year.

Citation: Hurt RD, Dale LC, Fredrickson PA, et al. Nicotine Patch Therapy for Smoking Cessation Combined With Physician Advice and Nurse Follow-up: One-Year Outcome and Percentage of Nicotine Replacement. JAMA. 1994;271(8):595–600.

Here is the link to the case study: https://doi.org/10.1001/jama.1994.03510320035026

• What type of statistical test do you think the researchers used for this study?
• Based on the P-values (e.g. P=0.011), what do you think the level of significance was? Why?
• Is there any other information you would like to have in order to determine whether or not the researchers have reached a valid conclusion? Please explain.

Answer 1