D Question 31 3 pts You are doing a study on the effect of eating vegetables on self-reported energy levels. You take a sample of n = 36 individuals and instruct them to eat at least 6 servings of vegetables, prepared in any way they choose, for three weeks. After three weeks, you instruct them to complete a survey in which they report their energy level. The average self-reported energy level was M = 20.5. Suppose the mean for the population is u = 10 and the standard deviation is o = 42. You want to answer the following research question: Does eating vegetables have an effect on self-reported energy levels? What is the value of the Z-STATISTC for this test? O +2.00 O+1.50 O +1.60 O +1.00