When we decide on a value for alpha,we are
A)defining the likelihood of accepting the alternative hypothesis.
B)establishing whether the test will be one or two tailed.
C)setting the probability of committing a Type I error.
D)setting the probability of a one-tailed test.

Question

Quizplus · Accepted Answer

When we decide on a value for alpha, we are setting the probability of committing a Type I error. Type I error refers to rejecting a null hypothesis when it is actually true. Alpha is the probability of making such an error, and it is usually set at 0.05 or 0.01. This means that there is a 5% or 1% chance that we will falsely reject the null hypothesis when it is actually true.

When We Decide on a Value for Alpha,we Are