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Solve the Problem As Long As n1\mathrm { n } _ { 1 }

question 32

Essay

Solve the problem.
-To test the null hypothesis that the difference between two population proportions is equal to a nonzero constant c, use the test statistic z=(p^1p^2)cp^1(1p1^)/n1+p2(1p2^)/n2^\mathrm{z}=\frac{\left(\hat{\mathrm{p}}_{1}-\hat{\mathrm{p}}_{2}\right)-\mathrm{c}}{\sqrt{\hat{p}_{1}\left(1-\hat{p_{1}}\right) / \mathrm{n}_{1}+\hat{p_{2}\left(1-\hat{p_{2}}\right) / \mathrm{n}_{2}}}} As long as n1\mathrm { n } _ { 1 } and n2\mathrm { n } _ { 2 } are both large, the sampling distribution of the test statistic z\mathrm { z } will be approximately the standard normal distribution. Given the sample data below, test the claim that the proportion of male voters who plan to vote Republican at the next presidential election is 15 percentage points more than the percentage of female voters who plan to vote Republican. Use the P-value method of hypothesis testing and use a significa level of 0.100.10 .
Men: n1=250,x1=146\mathrm { n } _ { 1 } = 250 , \mathrm { x } _ { 1 } = 146
Women: n2=202,x2=103\mathrm { n } _ { 2 } = 202 , \mathrm { x } _ { 2 } = 103

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