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

The probability of a type I error is the level of significance. Thus, to influence the probability of a type I error, the researcher can simple alter the level of significance.

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No, it doesn\'t affect the standard error. The standard error is solely dependent on the data gathered, not on the preferences of the researcher.