Announcements

In-Class

  • Slides: Confidence intervals in practice.
  • Chalk talk
  • Learning check:
    • Let’s pretend we don’t know the true mean mu = 68.3 inches
    • Using the resample() function, take a single sample (without replacement) of size $n=50$ of 50 OkCupid users’ heights profiles$height. Assign this to an object sample_50.
    • Using the mean(), sd(), and sqrt() functions, compute one confidence interval for mu.
    • Did your net catch the fish?

After-Class Updates