(d) Carry out an (incorrect) two-sample test and state your conclusions. (e) Using the sample variances s? and s associated with the set of readings observed before and after, calculate the variance of the difference, assuming independence (call this variance 1). How does this value compare with the variance of the difference calculated in part (a)? (Call this variance 2.) Why do you suppose variance 1 is so much bigger than variance 2? The average of the differences is the same as the difference in the averages. Show this. Hence, the two-sample t-test differed from the paired t-test only in the divisor. Which of the two tests in more powerful in this case, that is, declares a difference significant when in fact there is one?
(d) Carry out an (incorrect) two-sample test and state your conclusions. (e) Using the sample variances s? and s associated with the set of readings observed before and after, calculate the variance of the difference, assuming independence (call this variance 1). How does this value compare with the variance of the difference calculated in part (a)? (Call this variance 2.) Why do you suppose variance 1 is so much bigger than variance 2? The average of the differences is the same as the difference in the averages. Show this. Hence, the two-sample t-test differed from the paired t-test only in the divisor. Which of the two tests in more powerful in this case, that is, declares a difference significant when in fact there is one?
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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Hello,
For this question, I've solved (a)(b)(c) subparts.
I don't know how to do the rest, which means subparts (d) and (e).
Thank you for helping me this.
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