# Power Curve of a Mean Test

Requires a Wolfram Notebook System

Interact on desktop, mobile and cloud with the free Wolfram CDF Player or other Wolfram Language products.

Requires a Wolfram Notebook System

Edit on desktop, mobile and cloud with any Wolfram Language product.

The power of a hypothesis test is the probability of correctly rejecting the null hypothesis. Power is shown as the shaded area in the plot on the left and as a function of the noncentrality parameter, , in the plot on the right. Power depends on the effect size, , as well as the sample size, , and the significance level, .

[more]
Contributed by: Sijia Liang and Bruce Atwood (August 2011)

(Beloit College)

Open content licensed under CC BY-NC-SA

## Snapshots

## Details

## Permanent Citation