You are conducting research on the prevalence of severe binge drinking among college students.You define severe binge drinking as consuming 5 or more...
View the step-by-step solution to:

Question

You are conducting research on the prevalence of severe binge drinking among college students. You define severe

binge drinking as consuming 5 or more alcoholic beverages at a single sitting. You ask the question: "On how many days in the past two weeks have you consumed 5 or more drinks at one time? The answers can range from 0 to 14. You collect data on a random sample of 400 students.

The average for this sample in 1.42 with a standard deviation of .80. Construct a 95% confidence interval for the average binge drinking score in the population. 

Another student who reviewed your figures, says your math is correct, but using the normal distribution isn't correct because the binge drinking scores are highly skewed, with some students binging very frequently, and the majority of students never binge drinking at all. Is she correct that it is inappropriate to calculate a confidence interval for this research question? 

Top Answer

View the full answer
95% CI for mean_092419.png

Confidence interval - mean
95% confidence level
1.42 mean
0.8 std. dev.
400 n
1.960 z
0.078 half-width
1.50 upper confidence limit
1.34 lower confidence limit

Sign up to view the full answer

Why Join Course Hero?

Course Hero has all the homework and study help you need to succeed! We’ve got course-specific notes, study guides, and practice tests along with expert tutors.

-

Educational Resources
  • -

    Study Documents

    Find the best study resources around, tagged to your specific courses. Share your own to gain free Course Hero access.

    Browse Documents
  • -

    Question & Answers

    Get one-on-one homework help from our expert tutors—available online 24/7. Ask your own questions or browse existing Q&A threads. Satisfaction guaranteed!

    Ask a Question