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Question 11 / 1 ptsThe annual dividend rates for a random sample of 16 companies in three different industries, utilities,banking, and insurance were recorded. The ANOVA comparing the mean annual dividend rate among three industries rejected the null hypothesis that the dividend rates were equal. The Mean Square Error (MSE) was 3.36. The following table summarized the results:Based on the comparison between the mean annual dividend rate for companies in utilities and banking, the 95% confidence interval shows an interval of 1.28 to 6.28 for the difference. This result indicates that _____________________.There is no significant difference between the two ratesThe interval contains a difference of 5.00Correct!The annual dividend rate in the utilities industry is significantly less than the annual dividend rate in the banking industryThe annual dividend rate in the banking industry is significantly less than the annual dividend rate in the utilities industryAssuming the difference is calculated as (Banking dividend - Utilities dividend), the interval is [1.28, 6.28]. Because 0 is not in this interval, we conclude this pair of means differ. The mean annual utility dividend rate is less than the banking industry dividend rate.Question 20 / 1 ptsTwo accounting professors decided to compare the variance of their grading procedures. To accomplish this, they each graded the same 10 exams, with the following results:
At the 5% level of significance, what is the decision regarding the null hypothesis?