Question

which if the following values defaults to alpha when no significance level is given? 0.50 0.01 0.05 0.10

Explanation:

In statistical hypothesis - testing, when no significance level ($\alpha$) is specified, the common default value is 0.05. This value is widely used in many statistical analyses and research studies to determine the threshold for rejecting the null hypothesis.

Answer:

C. 0.05