The most commonly used significance level people are willing to take in testing the null hypothesis is _______.
A).00
B).10
C).50
D).05

Question

Quizplus · Accepted Answer

The commonly used significance level in testing the null hypothesis is 0.05 or 5%. This means that there is a 5% chance of rejecting the null hypothesis even if it is true. A significance level of 0.10 or 10% is sometimes used, but it is less commonly accepted as it increases the chance of a type I error. A significance level of 0.00 or 0% is not practical as it implies that there is no chance of a type I error, which is not possible in any statistical analysis. A significance level of 0.50 or 50% is not appropriate as it implies that there is a 50/50 chance of rejecting the null hypothesis, which is too random and not useful in scientific research.

The Most Commonly Used Significance Level People Are Willing to Take