The first of two sub-groups has 100 items withemean 15 and S.D. 3. If the whole group has 250 items with mean 15.6and S.D.√13.44 find the S.D. of the second group.

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Answered: The first of two sub-groups has 100…

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 first of two sub-groups has 100 items with mean 15 and S.D. 3. If the whole group has 250 items with mean 15.6 and S.D.V13.44 find the S.D. of the second group.