Answered: A college department pilots a New…

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 college department pilots a New program with 9 of its 20 students and compares income in each cohort 5 years later. Because our sample size is small and personal income is very skewed, the Wilcoxon Test is prefered over using a two-sample t-test. Using a 0.05 signifi- cance level, test whether the New program leads to larger incomes than the Old program.

new - 144, 18, 45, 70, 341, 66, 34, 98, 57

old- 98, 64, 80, 23, 0, 11, 51, 48, 45, 0, 50

New Rank - 2, 17, 13.5, 6, 1, 7, 15, 3.5, 9

old rank - 3.5, 8, 5, 16, 19.5, 18, 10, 12, 13.5, 19.5, 11

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