Exercise

pwr package Help Docs exploration

The pwr package has been loaded for you. Use the console to look at the documentation for the pwr.t.test() function. The list of arguments are specialized for a t-test and include the ability to specify the alternative hypothesis.

If you'd like, take some time to explore the different pwr package functions and read about their inputs.

What does a call to any pwr.*() function yield?

Instructions

50 XP

Possible Answers

A vector containing the thing to be calculated.
A data frame of the power, sample size, and other inputs.
An object of class "power.htest".
An object of class "integer".