A distribution consists of threefrequencies 250, 300, 350 havingmeans 30, 15 and 20 and standarddeviation 3, 4 and 5 respectively. Findcombined mean and standarddeviation.

We have given that Size N1=250 , N2=300, N3=350 Sample mean xbar1 =30 , x2=15 , x3=20 Standard…

Answered: A distribution consists of three…

A First Course in Probability (10th Edition)

10th Edition

ISBN:9780134753119

Author:Sheldon Ross

Publisher:Sheldon Ross

Chapter1: Combinatorial Analysis

Section: Chapter Questions

Problem 1.1P: a. How many different 7-place license plates are possible if the first 2 places are for letters and...

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A distribution consists of three requencies 250, 300, 350 having neans 30, 15 and 20 and standard eviation 3, 4 and 5 respectively. Find ombined mean and standard leviation.