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Researchers interested in determining the relative effectiveness of two different drug treatments on people with a chronic illness established two independent test groups. The first group consisted of 15 people with the iliness, and the second group consisted of 11 people with the illness. The first group received treatment 1 and had a mean time until remission of 180 days with a standard deviation of 6 days. The second group received treatment 2 and had a mean time until remission of 163 days with a standard deviation of 9 days. Assume that the populations of times until remission for each of the two treatments are normally distributed with equal variance. Construct a 95% confidence interval for the difference u-, between the mean number of days before remission after treatment 1 () and the mean number of days before remission after treatment 2 (u,). Then complete the table below. Carry your intermediate computations to at least three decimal places. Round your responses to at least two dečimal places. (If necessary, consult a list of formulas.) 12.08 What is the lower limit of the 95% confidence interval? 2192 What is the upper limit of the 95% confidence interval? Researchers interested in determining the relative effectiveness of two different drug treatments on people with a chronic illness established two independent test groups. The first group consisted of 15 people with the iliness, and the second group consisted of 11 people with the illness. The first group received treatment 1 and had a mean time until remission of 180 days with a standard deviation of 6 days. The second group received treatment 2 and had a mean time until remission of 163 days with a standard deviation of 9 days. Assume that the populations of times until remission for each of the two treatments are normally distributed with equal variance. Construct a 95% confidence interval for the difference u-, between the mean number of days before remission after treatment 1 () and the mean number of days before remission after treatment 2 (u,). Then complete the table below. Carry your intermediate computations to at least three decimal places. Round your responses to at least two dečimal places. (If necessary, consult a list of formulas.) 12.08 What is the lower limit of the 95% confidence interval? 2192 What is the upper limit of the 95% confidence interval?
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Answer rating: 100% (QA)
n 15 X 180 S6 h2 11 Xq 163 S 9 consthucl 959 confidence for g days We need to internal the di... View the full answer
Related Book For
Quantitative Investment Analysis
ISBN: 978-1119104223
3rd edition
Authors: Richard A. DeFusco, Dennis W. McLeavey, Jerald E. Pinto, David E. Runkle
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