55. A test in mathematics was given to 400 high school children of whom 156were böys and 250 girls. The results were as follows:n1 = 150X1 = 72n2 = 250X2 = 73%3D01 = 7.0Find the mean and the standard deviation of combined group.02 = 6.4

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Answered: were böys and 250 girls. The results…

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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were böys and 250 girls. The results were as follows: n1 = 150 X = n2 = 250 X2 = 73 = 72 %3D 01 =7.0 Find the mean and the standard deviation of combined group. 02 = 6.4