10.22 A political scientist is studying the impact of a political debate between candidates forgovernor in a small western state. The scientist wants to evaluate the proportion of registeredvotes who switch their preference after viewing the debate. The following table contain the datafrom 75 registered voters.Preference After DebatePreferenceBefore DebateCandidateACandidate BCandidate ACandidate B132828a. Test whether there was a shift away from candidate A after the debate. Use a .05Carefully state your conclusion.b. Construct a 95% confidence interval for the change after the debate in theproportion of registered voters preferring candidate A

Part (a): Test:Let us first test whether “Preference before debate” and “Preference after debate”…

Answered: 10.22 A political scientist is studying…

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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10.22 A political scientist is studying the impact of a political debate between candidates for
governor in a small western state. The scientist wants to evaluate the proportion of registered
votes who switch their preference after viewing the debate. The following table contain the data
from 75 registered voters.
Preference After Debate
Preference
Before Debate
CandidateA
Candidate B
Candidate A
Candidate B
13
28
28
a. Test whether there was a shift away from candidate A after the debate. Use a .05
Carefully state your conclusion.
b. Construct a 95% confidence interval for the change after the debate in the
proportion of registered voters preferring candidate A

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A political scientist is studying the impact of a political debate between candidates for governor in a small western state. The scientist wants to evaluate the proportion of registered voters who switched their preference after viewing the debate. The following table contain the data from 75 registered voters:

Construct a 95% confidence interval for the change after the debate in the proportion of registered voters preferring candidate A.