24. Probability of committing type I error and how to avoid it...

What is the probability of committing type I

Is normally designated by the lowercase Greek letter a (alpha) - another possible mistake is failing to reject a null hypothesis that is false The probability of a Type I Error in hypothesis testing is predetermined by the significance level. The power of a hypothesis test is nothing more than 1 minus the probability of a Type II error.

What is the probability of committing type II

Is normally designated with the lowercase Greek letter beta The probability of committing a type II error is equal to 1 minus the p-value, also known as beta.

How to avoid type 2 error

The power of the test could be increased by increasing the sample size, which decreases the risk of committing a type II error.

How to avoid type 1 error

requiring a smaller p-value for rejecting the null hypothesis