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Medical researchers interested in determining the relative effectiveness of two different drug treatments on people with a chronic mental illness established two independent test groups. The first group consisted of 9 people with the illness, and the second group consisted of 8 people with the illness. The first group received treatment 1 and had a mean time until remission of 190 days, with a standard deviation of 6 days. The second group received treatment 2 and had a mean time until remission of 189 days, with a standard deviation of 7 days. Assume that the populations of times until remission for each of the two treatments are normally distributed with equal variance. Can we conclude, at the 0.05 level of significance, that the mean number of days before remission after treatment 1, µ1, is greater than the mean number of days before remission after treatment 2, µ,? Perform a one-tailed test. Then fill in the table below. Carry your intermediate computations to at least three decimal places and round your answers as specified in the table. (If necessary, consult a list of formulas.)

Medical researchers interested in determining the relative effectiveness of two different drug treatments on people with a chronic mental illness established two independent test groups. The first group consisted of 9 people with the illness, and the second group consisted of 8 people with the illness. The first group received treatment 1 and had a mean time until remission of 190 days, with a standard deviation of 6 days. The second group received treatment 2 and had a mean time until remission of 189 days, with a standard deviation of 7 days. Assume that the populations of times until remission for each of the two treatments are normally distributed with equal variance. Can we conclude, at the 0.05 level of significance, that the mean number of days before remission after treatment 1, µ1, is greater than the mean number of days before remission after treatment 2, µ,? Perform a one-tailed test. Then fill in the table below. Carry your intermediate computations to at least three decimal places and round your answers as specified in the table. (If necessary, consult a list of formulas.)

MATLAB: An Introduction with Applications
MATLAB: An Introduction with Applications
6th Edition
ISBN:9781119256830
Author:Amos Gilat
Publisher:Amos Gilat
Chapter1: Starting With Matlab
Section: Chapter Questions
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Medical researchers interested in determining the relative effectiveness of two different drug treatments on people with a chronic mental illness established two independent test groups. The first group consisted of 9 people with the illness, and the second group consisted of 8 people with the illness. The first group received treatment 1 and had a mean time until remission of 190 days, with a standard deviation of 6 days. The second group received treatment 2 and had a mean time until remission of 189 days, with a standard deviation of 7 days. Assume that the populations of times until remission for each of the two treatments are normally distributed with equal variance. Can we conclude, at the 0.05 level of significance, that the mean number of days before remission after treatment 1, u1, is greater than the mean number of days before remission after treatment 2, µ? Perform a one-tailed test. Then fill in the table below. Carry your intermediate computations to at least three decimal places and round your answers as specified in the table. (If necessary, consult a list of formulas.)
Transcribed Image Text:Medical researchers interested in determining the relative effectiveness of two different drug treatments on people with a chronic mental illness established two independent test groups. The first group consisted of 9 people with the illness, and the second group consisted of 8 people with the illness. The first group received treatment 1 and had a mean time until remission of 190 days, with a standard deviation of 6 days. The second group received treatment 2 and had a mean time until remission of 189 days, with a standard deviation of 7 days. Assume that the populations of times until remission for each of the two treatments are normally distributed with equal variance. Can we conclude, at the 0.05 level of significance, that the mean number of days before remission after treatment 1, u1, is greater than the mean number of days before remission after treatment 2, µ? Perform a one-tailed test. Then fill in the table below. Carry your intermediate computations to at least three decimal places and round your answers as specified in the table. (If necessary, consult a list of formulas.)
The null hypothesis: The alternative hypothesis: H :0 The type of test statistic: (Choose one) ♥ The value of the test statistic: (Round to at least three decimal places.) The critical value at the 0.05 level of significance: (Round to at least three decimal places.) Can we conclude that the mean number of days before remission after treatment 1 is greater than the mean number of days before remission after Yes No treatment 2?
Transcribed Image Text:The null hypothesis: The alternative hypothesis: H :0 The type of test statistic: (Choose one) ♥ The value of the test statistic: (Round to at least three decimal places.) The critical value at the 0.05 level of significance: (Round to at least three decimal places.) Can we conclude that the mean number of days before remission after treatment 1 is greater than the mean number of days before remission after Yes No treatment 2?
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