In one of the studies, it was found that, in a random sample of 261 married...

50.1K

Verified Solution

Question

Statistics

In one of the studies, it was found that, in a random sample of261 married persons, 135 were smokers while in a sample of 239non-married persons there were 131 smokers.
a. Find a 90% confidence interval for the true difference inproportion of smokers among the married and non-marriedpopulations.
b. Based on the above interval, can one conclude that there is asignificant difference between the proportions of smokers in thetwo populations? Justify your answer
c. Do a formal hypothesis testing to test whether the twopopulations proportions are significantly different. Use ? = 0.10and a p-value method. Set up the appropriate null and alternativehypotheses. Is the conclusion same as the one in part(b)?

Answer & Explanation Solved by verified expert

4.0 Ratings (436 Votes)

an1 2611 135261 05172n2 2392 131239 05481 010From Table critical values of Z 164Confidence Interval 0104 0043SoAnswer is 0104 0043bSince the confidence interval 0104 0043 See Answer

Get Answers to Unlimited Questions

Join us to gain access to millions of questions and expert answers. Enjoy exclusive benefits tailored just for you!

Membership Benefits:

Unlimited Question Access with detailed Answers
Zin AI - 3 Million Words
10 Dall-E 3 Images
20 Plot Generations
Conversation with Dialogue Memory
No Ads, Ever!
Access to Our Best AI Platform: Flex AI - Your personal assistant for all your inquiries!

Become a Member