Questionis :The mean weight of 150 students is 60kgs. The mean weights of boys and girls are70 ks. and 55 kgs respectively, and thestandard deviations are 10 kgs. and 15 kgs.respectively. Find the number of boys andthe combined standard deviation.

Answered: Image /qna-images/answer/38007fc8-ffb6-4a8f-8f02-cad600edd01f.jpg

Answered: The mean weight of 150 students is 60…

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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The mean weight of 150 students is 60 kgs. The mean weights of boys and girls are 70 ks. and 55 kgs respectively, and the standard deviations are 10 kgs. and 15 kgs. respectively. Find the number of boys and the combined standard deviation.