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Author Question: The results of a recent poll on the preference of voters regarding the presidential candidates are ... (Read 26 times)

Lin Shi

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on: Mar 25, 2023

Question 1

The results of a recent poll on the preference of voters regarding presidential candidates are shown below.

Candidate

Voters
Surveyed

Voters Favoring
This Candidate

A

400

192

B

450

225


At 95% confidence, test to determine whether or not there is a significant difference between the preferences for the two candidates.



Question 2

The results of a recent poll on the preference of voters regarding the presidential candidates are shown below.

 

Voters Surveyed

Voters Favoring
This Candidate

Candidate A

200

150

Candidate B

300

195


a.Develop a 90% confidence interval estimate for the difference between the proportion of voters favoring each candidate.
b.Does your confidence interval provide conclusive evidence that one of the candidates is favored more? Explain.

Essentials of Statistics for Business and Economics ¦ Anderson, Sweeney, Williams, Camm, Cochran ¦ 7th Edition
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Marked as best answer by Lin Shi on Mar 25, 2023

khammond77

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Reply #1 on: Mar 25, 2023
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Lin Shi

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Reply 2 on: Mar 25, 2023
Wow, this really help

jamesnevil303

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Reply 3 on: Yesterday
Thanks for the timely response, appreciate it

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