A "Gallup poll" is a national public opinion poll run by Gallup, Inc. According to the company's website, a typical sample size for a phone-based Gallup poll is 1000 randomly-selected adults, and poll results are said to be representative of the opinions of all Americans within a margin of error of ±4 percentage points. What methods do you think Gallup, Inc. must use to ensure true random selection of all 1000 phone participants? Give at least 3 methods. Hint: Consider how lists of phone numbers are generated, which types of phone lines are called, the timing of calls, and how participants are selected when one phone number could be associated with various members of a household.
A "Gallup poll" is a national public opinion poll run by Gallup, Inc. According to the company's website, a typical sample size for a phone-based Gallup poll is 1000 randomly-selected adults, and poll results are said to be representative of the opinions of all Americans within a margin of error of ±4 percentage points. What methods do you think Gallup, Inc. must use to ensure true random selection of all 1000 phone participants? Give at least 3 methods. Hint: Consider how lists of phone numbers are generated, which types of phone lines are called, the timing of calls, and how participants are selected when one phone number could be associated with various members of a household.
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 "Gallup poll" is a national public opinion poll run by Gallup, Inc. According to the company's website, a typical sample size for a phone-based Gallup poll is 1000 randomly-selected adults, and poll results are said to be representative of the opinions of all Americans within a margin of error of ±4 percentage points. What methods do you think Gallup, Inc. must use to ensure true random selection of all 1000 phone participants? Give at least 3 methods.
Hint: Consider how lists of phone numbers are generated, which types of phone lines are called, the timing of calls, and how participants are selected when one phone number could be associated with various members of a household.
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