Question

After the affordable care act was passed into law, states debated on whether they should adopt the Medicaid expansion. Was a state’s decision to adopt the Medicaid expansion influenced by its majority party affiliation? To test this claim, the following data is available.

After reviewing the data, respond to the following questions in this discussion forum:

1. Conduct a chi-square test of independence for “States Voting for Barack Obama” and its effect on Medicaid Expansion. State a null and alternative hypothesis. Use a significance level of 0.05. Write a paragraph detailing the conclusion you draw from your results

States	Medicaid Expanded	Medicaid Not Expanded
Voted Democrat in 2012 presidential election	22	4
Voted Republican in 2012 presidential election	6	18

Answer 1

Answer Date: 11/11/2019 To test the hypothesis is that status of voting in Presidential election in 2012 and Medicaid expansion are dependent at 5% significance level. The null and alternative hypothesis is, The null hypothesis is that status of voting in Presidential election in 2012 and Medicaid expansion are independent. The alternative hypothesis is that status of voting in Presidential election in 2012 and Medicaid expansion are dependent. The chi-square statistics is, By using Excel software, find chi-square test statistics with the help of following steps: 1) Import the data. 2) Select Contingency table from Chi-Square in MegaStat option from Add-Ins menu. Select Chi-Square and Expected frequencies in Output options. 4) Click Ok. 3)

Chi-square Contingency Table Test for Independence No medicaid Total Medicaid 22 14.56 26 11.44 26.00 6 18 24 Democrat Observed Expected Republican Observed Expected Total Observed Expected 13.44 10.56 24.00 28 22 50 28.00 22.00 50.00 18.001 chi-square 1 df 2.21E-05 p-value From the Excel output, the chi-square test statistic is 18.001). The p-value is, From the Excel output, the p-value is 0.0000.

The p-value is 0.0000 Decision The conclusion is that the significant p-value is less than 0.05 which is 0.0000, so the null hypothesis is rejected at 5% level of significance. There is sufficient evidence to indicate that status of voting in Presidential election in 2012 and Medicaid expansion are dependent. The result is statistically significant.