a random variable representing dividend yield of bank stocks. We may assume that x has a normal distribution with o = 3.3%. A random sample of 10 bank stocks gave the following yi s) . 5.7 4.8 6.0 4.9 4.0 3.4 6.5 7.1 5.3 6.1 ple mean is x = 5.38%. Suppose that for the entire stock market, the mean dividend yield is u = 4.7%. Do these data indicate that the dividend yield of all bank stocks is higher than 0.01. (a) What is the level of significance? (Enter a number.) State the null and alternate hypotheses. Will you use a left-tailed, right-tailed, or two-tailed test? O Ho: H > 4.7%; H1: 1 = 4.7%; right-tailed O Ho: H = 4.7%; H1: M # 4.7%; two-tailed O Ho: M = 4.7%; H1: M > 4.7%; right-tailed O Ho: M = 4.7%; H1: M