A result is said to be statistically significant if the odds that random assignment has failed in an experiment is less than _____%.
A)2
B)5
C)10
D)25

Question

Quizplus · Accepted Answer

The most commonly used threshold for statistical significance is 5% (0.05), which means the odds of random assignment failing and producing an effect in the sample that is not present in the population is less than 5%. Choices A, C, and D are too low and would result in too many false positives (rejecting the null hypothesis when it is actually true).

A Result Is Said to Be Statistically Significant If the Odds