After running a t-test on the mean numbers of jelly beans that men and women eat over the course of the year, I conclude that men eat significantly more jelly beans than women. If men and women actually eat the same number of jelly beans, my conclusion is
A) a valid conclusion
B) a Type I error
C) a Type II error
D) an example of power

Question

Quizplus · Accepted Answer

This is a Type I error, which occurs when a researcher concludes that there is a significant difference between two groups when there is actually no difference. The researcher in this case has incorrectly rejected the null hypothesis that men and women eat the same number of jelly beans, and therefore, this is a Type I error.

After Running a T-Test on the Mean Numbers of Jelly