b) The Ekatahuna Widget factory is to replace its old machines, and must choose among the three types now available on the market. One of each type (A1, A2 and A3) is borrowed for testing. The 21 workers are randomly allocated, seven to each new machine. Each worker is timed for assembling 10 widgets using the old type of machine, and x (in seconds) is the average time taken. Then, after practice, the worker is timed for 10 widgets on the new machine, with Y being the average time in seconds. A1 A2 Аз y y y 23 22 21 23 24 22 25 24 23 24 25 22 26 26 24 26 26 24 28 27 25 28 28 26 30 28 26 27 30 29 32 30 28 29 32 29 33 31 31 34 33 198 32 Sum 197 188 178 191 184 Note: Ey = 22 +24? + ...+32 = 15327; Ex = 23 +...+32 = 15893 and Exy = 15572 Conduct the analysis of covariance, and test the significance of the covariate and adjusted treatment means.
b) The Ekatahuna Widget factory is to replace its old machines, and must choose among the three types now available on the market. One of each type (A1, A2 and A3) is borrowed for testing. The 21 workers are randomly allocated, seven to each new machine. Each worker is timed for assembling 10 widgets using the old type of machine, and x (in seconds) is the average time taken. Then, after practice, the worker is timed for 10 widgets on the new machine, with Y being the average time in seconds. A1 A2 Аз y y y 23 22 21 23 24 22 25 24 23 24 25 22 26 26 24 26 26 24 28 27 25 28 28 26 30 28 26 27 30 29 32 30 28 29 32 29 33 31 31 34 33 198 32 Sum 197 188 178 191 184 Note: Ey = 22 +24? + ...+32 = 15327; Ex = 23 +...+32 = 15893 and Exy = 15572 Conduct the analysis of covariance, and test the significance of the covariate and adjusted treatment means.
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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