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Author Question: In the last presidential election, before the candidates started their major campaigns, the ... (Read 56 times)

desireelg_7

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on: Mar 25, 2023

In the last presidential election, before the candidates started their major campaigns, the percentages of registered voters who favored the various candidates were as follows.

 

Percentages

Republicans

34%

Democrats

43%

Independents

23%


After the major campaigns began, a random sample of 400 voters showed that 172 favored the Republican candidate; 164 were in favor of the Democratic candidate; and 64 favored the Independent candidate.  We are interested in determining whether the proportion of voters who favored the various candidates had changed.


a.

Compute the test statistic.

b.

Using the p-value approach, test to see if the proportions have changed.

c.

Using the critical value approach, test the hypotheses.

Essentials of Statistics for Business and Economics ¦ Anderson, Sweeney, Williams, Camm, Cochran ¦ 7th Edition
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Marked as best answer by desireelg_7 on Mar 25, 2023

sadoniam

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Reply #1 on: Mar 25, 2023
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desireelg_7

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

marict

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Reply 3 on: Yesterday
Excellent

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