In 2012 American Idol completed its 11th season withJennifer Lopez, Steven Tyler, and Randy Jackson asjudges. Although the judges express their opinions aboutthe contestants’ performances, viewers vote to keep theirfavorites in the competition. During each episode, hostRyan Seacrest explains how viewers can vote via text,phone call, or online. Nothing prevents a viewer fromsubmitting multiple votes. Each week the contestant with the lowest number of votes is removed from the com-petition. Why are the results not a true depiction of all Americans’ musical preferences?A) Undercoverage biasB) Voluntary response biasC) The judges’ comments influence voters’ opinions.D) Since some voters may vote multiple times, one votedoes not correspond to one person.E) All of the above.

MATLAB: An Introduction with Applications
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ISBN:9781119256830
Author:Amos Gilat
Publisher:Amos Gilat
Chapter1: Starting With Matlab
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In 2012 American Idol completed its 11th season with
Jennifer Lopez, Steven Tyler, and Randy Jackson as
judges. Although the judges express their opinions about
the contestants’ performances, viewers vote to keep their
favorites in the competition. During each episode, host
Ryan Seacrest explains how viewers can vote via text,
phone call, or online. Nothing prevents a viewer from
submitting multiple votes. Each week the contestant with
the lowest number of votes is removed from the com-
petition. Why are the results not a true depiction of all
Americans’ musical preferences?
A) Undercoverage bias
B) Voluntary response bias
C) The judges’ comments influence voters’ opinions.
D) Since some voters may vote multiple times, one vote
does not correspond to one person.
E) All of the above.
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