A total of 28,468 adults were asked whether they thought the U.S. government should reduce the income differences between the rich and the poor. Table 55 compares the adults€™ responses with their political party affiliation.

a. What proportion of those surveyed are NOT Republicans?
b. What proportion of those surveyed are Independents AND think the government should not take action against the income difference?
c. What proportion of those surveyed are Independents OR think the government should not take action against the income difference?
d. From inspecting the two-way table, a student concludes that 47% of all Americans think the government should reduce the income difference. What would you tell the student?
e. If the sample was formed by performing simple random sampling on Democrats, simple random sampling on Independents, simple random sampling on Republicans, and simple random sampling on adults in other political parties, what type of sampling would that be?

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Table 55 Opinion about Income Difference versus Political Party Affiliation Reduce Democrat Independent Republican Other Total Difference No Opinion Take No Action Total 10,313 10,240 7513 402 5895 4849 2344 169 13,257 2085 2179 1390 68 5722 2333 3212 3779 165 9489 28,468