A political science professor is interested in comparing the academic achievement characteristics of students who vote...

A political science professor is interested in comparing the academic achievement characteristics of students who vote in national elections and those of those who do not vote. In a random sample of 114 students who claim to have voted in the last presidential election, you see a mean of the mean scores of 2.5 and a standard deviation of 0.51. In an independent random sample of 123 students who have not voted, the mean of the mean scores is 2.97 and the standard deviation is 0.74.

The margin of error for the 98% confidence interval for the difference in scores of students who vote and those who are not;

Note: Suppose the scores are normal with unknown averages and σ1 = σ2 unknown.

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orchestra answered 1 year ago

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