Answered: a population of PWD learners in 5…

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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a population of PWD learners in 5 schools in a certain municipality of Cavite City are (x) 9, 5, 6, 12 and 15. Suppose that 2 schools were selected as samples, determine the mean and variance of the sampling distribution of sample mean

STEPS 1. Compute the mean of the population μ.

Formula:

1. μ=∑ X/N=___________

The mean of the population is__________

2. Compute the variance of the population variance

(a) Subtract each measurement by the computed population mean

(b) Square the results obtained in (a) then add. Divide the sum by the frequency of measurements to get the value of the population variance

X	(a) x- μ	(b) (x- μ)²

(2) σ²=∑ (x- μ)²/N= ___________

so the variance of the population is _________

3.Determine the number of possible samples of size n=2

Use the formula _NC_{n= N! / n!(N-n)!= ___________}

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