Solution Found!
test the given claim.Is Seat Belt Use Independent of
Chapter 11, Problem 14BSC(choose chapter or problem)
Is Seat Belt Use Independent of Cigarette Smoking? A study of seat belt users and nonusers yielded the randomly selected sample data summarized in the given table (based on data from “What Kinds of People Do Not Use Seat Belts?” by Helsing and Comstock, American Journal of
Public Health, Vol. 67, No. 11). Test the claim that the amount of smoking is independent of seat belt use. A plausible theory is that people who smoke more are less concerned about their health and safety and are therefore less inclined to wear seat belts. Is this theory supported by the sample data?
Questions & Answers
QUESTION:
Is Seat Belt Use Independent of Cigarette Smoking? A study of seat belt users and nonusers yielded the randomly selected sample data summarized in the given table (based on data from “What Kinds of People Do Not Use Seat Belts?” by Helsing and Comstock, American Journal of
Public Health, Vol. 67, No. 11). Test the claim that the amount of smoking is independent of seat belt use. A plausible theory is that people who smoke more are less concerned about their health and safety and are therefore less inclined to wear seat belts. Is this theory supported by the sample data?
ANSWER:
Answer:
Step 1 of 2
Number of cigarettes smoked per day |
|||||
0 |
1-14 |
15-34 |
35 and over |
Total |
|
Wear seat belts |
175 |
20 |
42 |
6 |
243 |
Don’t wear seat belts |
149 |
17 |
41 |
9 |
216 |
Total |
324 |
37 |
83 |
15 |
459 |
The solution to this problem takes four steps: (1) state the hypotheses, (2) formulate an analysis plan, (3) analyze sample data, and (4) interpret results. We work through those steps below: