Using the 0.5 significance level (5%), address the following question: was the average test score earned by the early finishers significantly different from the overall mean? What is the correct conclusion ?

A) Reject the null hypothesis, results indicate that early finishers score higher

B) Reject the null hypothesis, results indicate that early finishers score lower

C) Reject the null hypothesis, results indicate the early finishers score differently in an unknown way

D) Fail to reject the null hypothesis, insufficient evidence to suggest a treatment effect

E) Fail to reject the null hypothesis, we have proven early finishers score the same as the general population