14) Let x be a random variable representing dividend yield of Australian bank stocks. We may assume that x has a normal distribution with = 2.4%. A random sample of 10 Australian bank stocks give a sample mean x = 5.38%. For the entire Australian stock market, the mean dividend yield is = 4.7% (Reference: Forbes). Do these data indicate that dividend yield of all Australian bank stocks is higher than 4.7%? Use a = 0.01. a) State the null hypothesis: b) State the alternate hypothesis: c) Find the p-value: d) Do these data indicate that dividend yield of all Australian bank stocks is higher than 4.7?