Answered: Age and party 2008. The Pew Research…

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

Age and party 2008. The Pew Research Center
collected data from national exits polls conducted by
NBC News after the 2008 presidential election. The
following table shows information regarding voter age
and party preference:

a) What sampling strategy do you think the pollsters
used? Explain.
b) What percentage of the people surveyed were
Democrats?

c) Do you think this is a good estimate of the percent-
age of voters in the United States who are registered

Democrats? Why or why not?d) In creating this sample design, what question do you
think the pollsters were trying to answer?

Republican Democrat Other Total
18–29 260 390 351 1001
30–44 320 379 300 999
45–64 329 369 300 998
65+ 361 392 251 1004
Total 1270 1530 1202 4002

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