Question

A statistician controls ____________ by establishing the risk he or she is willing to take in terms of rejecting a true null hypothesis.

a) Alpha
b) beta
c) mean
d) standard deviation

Answer 1

a) Alpha

Explanation:

The correct option is alpha because alpha known as type I error is the probability of reject the null hypothesis when null hypothesis is true. If we take alpha 5%, it means that we are taking 5 out of 100 chance of rejecting the null hypothesis when it is true.

So, statistician controls alpha by establishing the risk of rejecting a null hypothesis when its true.