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part of a practice test, want to see if I am doing it right

part of a practice test, want to see if I am doing it right

MATLAB: An Introduction with Applications
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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This is part of a practice test, want to see if I am doing it right

In a study of water quality in California schools, 35 of the 1037 California school districts were chosen at random and the water quality at every school in the chosen districts was tested. E This is an example of a ... O... cluster sample of California Schools. O stratified sample of California schools. ... convenience sample of California schools. O... simple random sample of California schools.
Transcribed Image Text:In a study of water quality in California schools, 35 of the 1037 California school districts were chosen at random and the water quality at every school in the chosen districts was tested. E This is an example of a ... O... cluster sample of California Schools. O stratified sample of California schools. ... convenience sample of California schools. O... simple random sample of California schools.
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