Answered: Polling, part II According to Pew…

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

Polling, part II According to Pew Research, the contact
rate (probability of contacting a selected household) was

90% in 1997 and 62% in 2012. However, the coopera-
tion rate (probability of someone at the contacted house-
hold agreeing to be interviewed) was 43% in 1997 and

dropped to 14% in 2012.
a) What was the probability (in 2012) of obtaining an
interview with the next household on the sample list?
(To obtain an interview, an interviewer must both
contact the household and then get agreement for the
interview.)

b) Was it more likely to obtain an interview from a ran-
domly selected household in 1997 or in 2012?

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