Hypothesis Testing Exercise: Testing If ACE Graduates Do Better

This exercise reviews several steps in hypothesis testing. You will be asked to calculate a z-score corresponding to your data, find an associated p value, and draw a conclusion.

The Verbal Ability and Skills Test (VAST) is a standardized test with a range of 0 to 1000. VAST scores are normally distributed within the population of test takers with a mean score of 500 with a standard deviation of 100.


The ACE training program boasts that the population of their graduates scores higher on average than the population of individuals who do not participate in their training course. That is, the training program claims that the average score on the VAST for those complete their training program is higher than 500. You have been hired to test this claim.