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A statistician wishes to determine the difference between two population means. A sample of 18 items from Population #1 yields a mean of 205 with a standard deviation of 12. The sample of 15 items from Population #2 yields a mean of 190 with a standard deviation of 10. Assume that the values are normally distributed in each population. What is the 95% confidence interval for the difference in the means of the two populations? (11.17, 18.83) (6.01, 22.54) (0.33, 29.67) (6.79, 23.22)

A statistician wishes to determine the difference between two population means. A sample of 18 items from Population #1 yields a mean of 205 with a standard deviation of 12. The sample of 15 items from Population #2 yields a mean of 190 with a standard deviation of 10. Assume that the values are normally distributed in each population. What is the 95% confidence interval for the difference in the means of the two populations? (11.17, 18.83) (6.01, 22.54) (0.33, 29.67) (6.79, 23.22)

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
Problem 1P
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A statistician wishes to determine the difference between two population means. A sample of 18 items from Population #1 yields a mean of 205 with a standard deviation of 12. The sample of 15 items from Population #2 yields a mean of 190 with a standard deviation of 10. Assume that the values are normally distributed in each population. What is the 95% confidence interval for the difference in the means of the two populations? (11.17, 18.83) (6.01, 22.54) (0.33, 29.67) (6.79, 23.22)
Transcribed Image Text:A statistician wishes to determine the difference between two population means. A sample of 18 items from Population #1 yields a mean of 205 with a standard deviation of 12. The sample of 15 items from Population #2 yields a mean of 190 with a standard deviation of 10. Assume that the values are normally distributed in each population. What is the 95% confidence interval for the difference in the means of the two populations? (11.17, 18.83) (6.01, 22.54) (0.33, 29.67) (6.79, 23.22)
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