Answered: A local news program decides to conduct…

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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Question

A local news program decides to conduct a poll to see
how their viewers feel about their new programming
format. At the end of each program during one week they

ask viewers to call in and express their opinions. The sta-
tion gives one number to dial if you like the new format,

and another number to dial if you do not like it. Which of

the following is a correct characterization of this sam-
pling approach?

a) This sampling approach will be biased because peo-
ple might dial the number incorrectly, and therefore

not everyone will be correctly represented.
b) This sampling approach will be biased because the
people who call in will be those who have stronger

feelings about the new format, and therefore the sam-
ple will not be representative of the population.

c) This sampling approach will be unbiased because
people can call in with either opinion, therefore the
sample will be representative of the population.
d) This sampling approach will be unbiased because
the station doesn’t know who will call in, making it a
random sample.
e) It is impossible to tell whether this sampling
approach will be biased or not because the station
cannot predict who will call in.

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