Answer the following statement(s) true (T) or false (F)
1. A paired t-test violates the assumption of homogeneity.
2. The one-sample t-test tests whether the mean of a single variable is different from a prespecified value (norm).
3. The Mann–Whitney and Wilcoxon tests are equivalent.
4. The Mann–Whitney and Wilcoxon tests assign ranks to the testing variable and test whether the sums of ranks differ between the two categories.
5. The signed rank test is an independent samples test that examines differences of mean ranks to evaluate whether two samples come from the same population.
1.false
2.true
3.true
4.true
5.false
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The great paradox of the presidency is that no other office in America unites so much power and purpose to help Americans approach their democratic potential, yet also poses the most serious threats to the ideals of democracy
Indicate whether the statement is true or false.
In 1957, what did President Eisenhower do in order to enforce a desegregation order in Little Rock, Arkansas?
a. He sued the school district in court. b. He appointed more federal district judges. c. He declared martial law. d. He sent in federal troops.