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A researcher is running a study to determine the proportion of men that wear neckties to work. To collect data, he keeps track of how a group of men are dressed as the enter an office building.

A researcher is running a study to determine the proportion of men that wear neckties to work. To collect data, he keeps track of how a group of men are dressed as the enter an office building.

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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A researcher is running a study to determine the proportion of men that wear neckties to work. To collect data, he keeps track of how a group of men are dressed as the enter an office building. Is this an observational study or an experiment? Why? Identify the sample and population of this study. In order to match the demographics of the company, the researcher wants 10% of the sample to be management and 90% to not be. How can this be done using stratified sampling? The researcher also decides to keep track of subjects' age. This would be considered: stratifying, bias, blocking, control? If the researcher removed all employees of Asian descent from the sample, what is this considered?
Transcribed Image Text:A researcher is running a study to determine the proportion of men that wear neckties to work. To collect data, he keeps track of how a group of men are dressed as the enter an office building. Is this an observational study or an experiment? Why? Identify the sample and population of this study. In order to match the demographics of the company, the researcher wants 10% of the sample to be management and 90% to not be. How can this be done using stratified sampling? The researcher also decides to keep track of subjects' age. This would be considered: stratifying, bias, blocking, control? If the researcher removed all employees of Asian descent from the sample, what is this considered?
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