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Tyrone is an investment broker who tells his clients that some investments are a moderate risk and others are an aggressive risk. He wants to know the difference between the annual return on the investments in each category. He sampled 17 investments from each category. There was a mean annual return of 6.2% on the investments in the moderate sample, with a standard deviation of 9.3%. The aggressive investments had a sample mean of 7.3% and a standard deviation of 12.4%. Assume that the conditions for inference have been met, and that Tyrone will use the conservative degrees of freedom corresponding to a sample size of 17. Let uA AM be the difference in mean annual return (in percents) of the groups of investments. Which of the following is a 90% confidence interval for uA - JAM? Choose 1 answer: (-5.49, 7.69) (-5.464, 7.664) (-5.084, 7.284) D. (-3.926, 6.126) (-2.,659, 4.859) Tyrone is an investment broker who tells his clients that some investments are a moderate risk and others are an aggressive risk. He wants to know the difference between the annual return on the investments in each category. He sampled 17 investments from each category. There was a mean annual return of 6.2% on the investments in the moderate sample, with a standard deviation of 9.3%. The aggressive investments had a sample mean of 7.3% and a standard deviation of 12.4%. Assume that the conditions for inference have been met, and that Tyrone will use the conservative degrees of freedom corresponding to a sample size of 17. Let uA AM be the difference in mean annual return (in percents) of the groups of investments. Which of the following is a 90% confidence interval for uA - JAM? Choose 1 answer: (-5.49, 7.69) (-5.464, 7.664) (-5.084, 7.284) D. (-3.926, 6.126) (-2.,659, 4.859)
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sample 1 sample 2 the sample mean x 73000 62000 std deviation s 12400 9300 s... View the full answer
Related Book For
Applied Statistics for Public and Nonprofit Administration
ISBN: 978-1285737232
9th edition
Authors: Kenneth J. Meier, Jeffrey L. Brudney, John Bohte
Posted Date:
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