Crop researchers want to test the effect of three different fertilizer mixtures on crop yield( measured in kilograms per hectare). They can use ANOVA to find out if there is a difference in crop yields between the three groups. Suppose the researchers rejected their null hypothesis. Which of the following statement best expresses the conclusion of their hypothesis test? A. There is insufficient evidence to conclude that all three fertilizer mixtures have a different mean yield. B. There is sufficient evidence to conclude that all three fertilizer mixtures have a different mean yield. C. There is sufficient evidence to conclude that at least one of the three fertilizer mixtures have a different mean yield than the others. D. There is insufficient evidence to conclude that the three fertilizers are not independent E. There is sufficient evidence to conclude that the three fertilizers are not independent F. There is insufficient evidence to conclude that at least one of the three fertilizer mixtures have a different mean yield than the others. Part 2: In sister Johnson's class of 42 students, 20 students have blonde hair, 15 students have black hair and 7 students have brown hair. If a student is picked at random from sister Johnson's class what is the probability that they have black hair