What can a researcher do to influence the probability of a T

What can a researcher do to influence the probability of a Type I error? Does this action have any effect on the size of the standard error?

Solution

What can a researcher do to influence the probability of a Type I error?

type I error is when you reject Ho when this is true

The standard error can be decreased by increasing the sample size. Changes in sample size have no effect on the probability of a Type I error. However, the probability of a Type I error is under the direct control of the researcher who selects an alpha level for the test. The choice of an alpha level does not affect the standard error.