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Author Question: The common sample size, n, needed to estimate the difference between two population proportions to ... (Read 28 times)

sheilaspns

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on: Apr 7, 2020
The common sample size, n, needed to estimate the difference between two population proportions to within a margin of error E with a confidence level of 1 - α can be found as follows:  in the expression

E = zα/2
replace n1 and n2 by n (assuming both samples have the same size) and replace each of p1 and p2 by 0.5 (assuming their values are not known). Then solve for n.

Suppose that you want to estimate the difference between the proportions of  men and women who plan to vote in the next presidential election.  Obtain a common sample size that will ensure a margin of error of at most 0.03 for a 99% confidence interval
◦ 1842
◦ 111
◦ 3684
◦ 2135
Introductory Statistics ¦ Weiss ¦ 10th Edition
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Marked as best answer by sheilaspns on Apr 7, 2020

shayla

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Reply #1 on: Apr 7, 2020
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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sheilaspns

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Reply 2 on: Apr 7, 2020
YES! Correct, THANKS for helping me on my review

strudel15

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Reply 3 on: Yesterday
Wow, this really help

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