Sophia wants to foster creativity in her organization. She finds an online training program that claims to teach people how to approach workplace challenges in a more creative way. Sophia is skeptical but decides to give it a try. She randomly selects 40 employees and randomly assigns half of them to complete the online training program (n=20). The other half (n=20) do not complete the online training program. Two weeks later all 40 employees complete the Torrance Test of Creative Thinking. The test is scored from 0 to 100, where higher scores indicate higher levels of creative thinking. Sophia scores the results and conducts an analysis to test the claim that employees who received the training demonstrated more creative thinking than those who did not receive the training. What type of test should she conduct (If relevant, the result of the F-test: 2 sample for variances is p = .001)?