Answered: For several years, a political party…

Name: For several years, a political party has had 38% support among the pop
Uploaded: 2024-03-20T07:07:00.000Z
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Description: For several years, a political party has had 38% support among the population of potential voters. However, the party has recently changed its branding, and the party leadership wishes to know whether support for the party has changed. A random sampl

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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For several years, a political party has had 38% support among the population of potential voters. However, the party has recently changed its branding, and the party leadership wishes to know whether support for the party has changed. A random sample of voters is selected, and each person in the sample is asked whether he or she supports the party. Using the results, a hypothesis test is performed in order to find out whether there is convincing evidence of a change in the level of support for the party. A standardized z statistic is used, and a p-value is calculated. The p value is... (be sure to read the options below carefully...)

a) the probability that support for the party has changed.

b) the probability of getting the z statistic calculated in the study, given that support for the party has not changed.

c) the probability of getting a z statistic at least as far from zero as the one in the study, given that support for the party has not changed.

d) the probability that support for the party has not changed.

e) the probability of getting a z statistic at least as far above zero as the one in the study, given that support for the party has not changed.

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