Exercise

pwr.t.test() documentation

I mentioned in the video that there are additional arguments that can be provided to pwr.t.test(). Take a look at the documentation to see what the difference is between type and alternative. Note, you'll need to load the pwr package.

Instructions

50 XP

Possible Answers

type refers to number and type of samples; alternative to hypothesis.
type relates to Type 1 error; alternative relates to Type 2 error.
type refers to hypothesis; alternative to number and type of samples.
type relates to Type 2 error; alternative relates to Type 1 error.

Take Hint (-15 XP)