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Name: Country X conducted a referendum, where voters were to answer either “
Uploaded: 2024-03-20T07:07:00.000Z
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Description: Country X conducted a referendum, where voters were to answer either “yes” or “no” to a question on a political issue. A random sample of 2,150 eligible voters were asked in the poll and 950 of them answered “yes”. Let p denote the true population pr

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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Country X conducted a referendum, where voters were to answer either “yes” or “no” to a question on a political issue. A random sample of 2,150 eligible voters were asked in the poll and 950 of them answered “yes”. Let p denote the true population proportion of “yes” voters.

We wish to predict the result of the referendum, by testing the hypotheses H0: p = 0.43 against H1: p < 0.43.

Perform a suitable test of these hypotheses at the 5% level of significance, stating your conclusion in terms of a predicted result for the referendum.
Determine a 90% central confidence interval for p.

3.Explain the effect of using a larger sample on the confidence interval in part (ii)

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