Exercise

# T-test power analysis

Now that we know how to run power analyses for continuous data using a t-test, let's try running a power analysis for an experiment on time spent on the homepage.

Instructions

**100 XP**

- Load the
`pwr`

package. - Set the effect size (
`d`

) to`0.3`

. - Set our significance level to
`0.05`

and power to`0.8`

.