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 = 10. Suppose the mean for the population is u = 20.5 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 does the null hypothesis say about the effect of eating vegetables on self-reported energy levels ? Eating vegetables has DOES have an effect effect on self-reported energy levels. Eating vegetables will cause energy levels to decrease. None of the other answers are correct. Eating vegetables has NO effect on self-reported energy levels.