Let x be a random variable representing dividend yield of Australian bank stocks. We may assume that x has a normal distribution with a = 2.1%. A random sample of 25 Australian bank stocks has a sample mean of x - 8.77%. Do these data indicate that the dividend yield of all Australian bank stocks is higher than 5%? Use a = 0.1. Based on your answers, will you reject or fail to reject the null hypothesis? The P-value is less than the level of significance and so the data are not statistically significant. Thus, we fail to reject the null hypothesis. The P-value is less than the level of significance and so the data are statistically significant. Thus, we fail to reject the null hypothesis. The P-value is greater than the level of significance and so the data are statistically significant. Thus, we fail to reject the null hypothesis. The P-value is greater than the level of significance and so the data are not statistically significant. Thus, we fail to reject the null hypothesis. The P-value is less than the level of significance and so the data are statistically significant. Thus, we reject the null hypothesis