4. Let X be a random variable representing dividend yield of Australian bank stocks. We may assume that X has a normal distribution with standard deviation = 2.4%. A random sample of 19 Australian bank stocks has a sample mean of = 8.71%. For the entire Australian stock market, the mean dividend yield is = 5.9%. Do these data indicate that the dividend yield of all Australian bank stocks is higher than 5.9% ? Use = .05. Are the data statistically significant at the given level of significance? Based on your answers, will you reject or fail to reject the null hypothesis? A. The p-value is less than the level of significance and so the data are not statistically significant. Thus, we reject the null hypothesis. B. 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. C. 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. D. The p-value is greater than the level of significance and so the data are not statistically significant. Thus, we reject the null hypothesis. E. The p-value is less than the level of significance and so the data are statistically significant. Thus, we reject the null hypothesis.
4. Let X be a random variable representing dividend yield of Australian bank stocks. We may assume that X has a normal distribution with standard deviation = 2.4%. A random sample of 19 Australian bank stocks has a sample mean of = 8.71%. For the entire Australian stock market, the mean dividend yield is = 5.9%. Do these data indicate that the dividend yield of all Australian bank stocks is higher than 5.9% ? Use = .05. Are the data statistically significant at the given level of significance? Based on your answers, will you reject or fail to reject the null hypothesis? A. The p-value is less than the level of significance and so the data are not statistically significant. Thus, we reject the null hypothesis. B. 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. C. 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. D. The p-value is greater than the level of significance and so the data are not statistically significant. Thus, we reject the null hypothesis. E. The p-value is less than the level of significance and so the data are statistically significant. Thus, we reject the null hypothesis.
MATLAB: An Introduction with Applications
6th Edition
ISBN:9781119256830
Author:Amos Gilat
Publisher:Amos Gilat
Chapter1: Starting With Matlab
Section: Chapter Questions
Problem 1P
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Transcribed Image Text:4. Let X be a random variable representing dividend yield of Australian bank stocks. We may
assume that X has a normal distribution with standard deviation = 2.4%. A random sample of 19
Australian bank stocks has a sample mean of = 8.71%. For the entire Australian stock market,
the mean dividend yield is = 5.9%. Do these data indicate that the dividend yield of all Australian
bank stocks is higher than 5.9% ? Use Q=.05. Are the data statistically significant at the given level
of significance? Based on your answers, will you reject or fail to reject the null hypothesis?
A. The p-value is less than the level of significance and so the data are not statistically
significant. Thus, we reject the null hypothesis.
B. 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.
C. 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.
D. The p-value is greater than the level of significance and so the data are not statistically
significant. Thus, we reject the null hypothesis.
E. The p-value is less than the level of significance and so the data are statistically
significant. Thus, we reject the null hypothesis.
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