For two groups of observations, the following results are available :Group 1E(X – 5) = 3Group II 2(Х — 8) %3D— 11E(X – 8)2 = 76E(X – 5)2 = 43N1 = 18N, = 17Find the mean and standard deviation of 35 observations obtained by combining the two groups.

It is given that: For group I: ∑X-5 =3∑X-52 =43 ,N1 = 18 For group II: ∑X-8 = -11∑X-82 = 76 N2 =17

Answered: For two groups of observations, the…

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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For two groups of observations, the following results are available : Group II E(X – 8) = – 11 E(X – 8)? = 76 Group 1 E(X – 5) = 3 E(X – 5)2 = 43 N = 18 N2 = 17 Find the mean and standard deviation of 35 observations obtained by combining the two groups.