D Question 9 7.5 pts Let x be a random variable representing dividend yield of Australian bank stocks. We may assume that x has a normal distribution with o = 2.0%. A random sample of 19 Australian bank stocks has a mean x =6.33%. For the entire Australian stock market, the mean dividend yield is u = 7.5%. Do these data indicate that the dividend yield of all Australian bank stocks is higher than 7.5%? Use a = 0.01. What is the level of significance? O 0.995 0.01 O 0.02 O 0.99 O 0.005 Previous Next