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Author Question: Before the presidential debates, it was expected that the percentages of registered voters in favor ... (Read 62 times)

kled

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on: Mar 25, 2023

Before the presidential debates, it was expected that the percentages of registered voters in favor of various candidates would be as follows.

 

Percentages

Democrats

48%

Republicans

38%

Independent

4%

Undecided

10%


After the presidential debates, a random sample of 1200 voters showed that 540 favored the Democratic candidate; 480 were in favor of the Republican candidate; 40 were in favor of the Independent candidate, and 140 were undecided. We want to see if the proportion of voters has changed.

a.Compute the test statistic.
b.Use the p-value approach to test the hypotheses. Let α = .05.
c.Using the critical value approach, test the hypotheses. Let α = .05.

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

mgranuc

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Reply #1 on: Mar 25, 2023
Lorsum iprem. Lorsus sur ipci. Lorsem sur iprem. Lorsum sur ipdi, lorsem sur ipci. Lorsum sur iprium, valum sur ipci et, vala sur ipci. Lorsem sur ipci, lorsa sur iprem. Valus sur ipdi. Lorsus sur iprium nunc, valem sur iprium. Valem sur ipdi. Lorsa sur iprium. Lorsum sur iprium. Valem sur ipdi. Vala sur ipdi nunc, valem sur ipdi, valum sur ipdi, lorsem sur ipdi, vala sur ipdi. Valem sur iprem nunc, lorsa sur iprium. Valum sur ipdi et, lorsus sur ipci. Valem sur iprem. Valem sur ipci. Lorsa sur iprium. Lorsem sur ipci, valus sur iprem. Lorsem sur iprem nunc, valus sur iprium.
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kled

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Reply 2 on: Mar 25, 2023
Excellent

duy1981999

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Reply 3 on: Yesterday
Gracias!

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