12. What is the probability of observing a value of z53.51 or greater if 0 H is true? What might you conclude? A new variety of pearl millet is expected to provide an increased yield over the variety presently in use which is about 70 bushels per acre. The new variety of millet produced an average yield of x 577 bushels per acre with a standard deviation of s512.6 bushels based on 40 one-acre yields