Medical researchers interested in determining the relative effectiveness of two different drugtreatments on people with a chronic mental illness established two independent test groups. Thefirst group consisted of 14 people with the illness, and the second group consisted of 13 people withthe illness. The first group received treatment 1 and had a mean time until remission of 158 days,with a standard deviation of 9 days. The second group received treatment 2 and had a mean timeuntil remission of 166 days, with a standard deviation of 8 days. Assume that the populations oftimes until remission for each of the two treatments are normally distributed.a. Can we conclude, at the 0.05 level of significance, that the mean number of days beforeremission after treatment 1, µ1, is less than the mean number of days before remission aftertreatment 2, µ2? Test the clam with P-value. (Just use the table.)b. Construct 90% confidence interval for the difference of the mean number of days beforeremission after treatment 1, µ1, mean number of days before remission after treatment2, µ2.c. How does the confidence interval from part b support your answer in part a.

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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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