Underage drinking

Underage drinking#

About \(70\)% of 18-20 year olds consumed alcoholic beverages in any given year. We now consider a random sample of \({{params.n}}\) 18-20 year olds.

Part 1#

How many people would you expect to have consumed alcoholic beverages?

Part 2#

And with what standard deviation? Round to 2 decimal places.

Part 3#

Would you be surprised if there were \({{params.k}}\) or more people who have consumed alcoholic beverages?

Answer Section#

  • Yes

  • No

Part 4#

What is the probability that \({{params.k}}\) or more people in this sample have consumed alcoholic beverages? Use normal approximation and 0.5 correction. Round to 4 decimal places.

Attribution#

Problem is from the OpenIntro Statistics textbook, licensed under the CC-BY 4.0 license.
Image representing the Creative Commons 4.0 BY license.