The results below are based on data collected on campus as part of a student project for an introductory statistics class at UF. If there is more than one group/treatment, the first group mentioned is group 1.  Data was collected to compare the proportion of "Greeks" and non-"Greeks" who voted for Obama in 2012. "Greeks" are students who belong to a fraternity or sorority. The p-value was 0.00, and the 95% confidence interval was ( -0.534,  -0.202). This problem is about   _ two independent proportions ? _ The sign of the alternative hypothesis should be      _ not = ? _ Based on the p-value we can       _ reject the Ho _  at alpha = 0.05. At which alpha levels could we Reject Ho?       _ all of usual alpha levels _ Are the results statistically significant at alpha=0.01?      _ yes _ We have    _ very strong evidence _  to say that the proportion of "Greeks" who voted for Obama is different from the proportion of non-"Greeks". We are 95% confident that the proportion of "Greeks" who voted fo

The results below are based on data collected on campus as part of a student project for an introductory statistics class at UF. If there is more than one group/treatment, the first group mentioned is group 1. 

Data was collected to compare the proportion of "Greeks" and non-"Greeks" who voted for Obama in 2012. "Greeks" are students who belong to a fraternity or sorority. The p-value was 0.00, and the 95% confidence interval was ( -0.534,  -0.202).

This problem is about   _ two independent proportions ? _

The sign of the alternative hypothesis should be      _ not = ? _

Based on the p-value we can       _ reject the Ho _  at alpha = 0.05.

At which alpha levels could we Reject Ho?       _ all of usual alpha levels _

Are the results statistically significant at alpha=0.01?      _ yes _

We have    _ very strong evidence _  to say that the proportion of "Greeks" who voted for Obama is different from the proportion of non-"Greeks".

We are 95% confident that the proportion of "Greeks" who voted for Obama was between   _ 20.2% and 53.4% smaller _ than the proportion of non-"Greeks".

The results of the confidence interval and significance test at alpha=0.05    _agree_

We need to assume the sample was randomly selected because we are making inferences about      _ an unknown parameter _

The population of interest is       _ all UM students _

For the students collecting the data, it would be _ very difficult / fairly easy _ to select a random sample from this population.

 Students collecting the data should strive for       _ at least 15 successes and 15 failures per group in the sample _

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Are these answers correct?