The optimum item difficulty index for a multiple-choice item
A) varies inversely with the number of options.
B) ranges from .30 to .70 for true-false tests.
C) varies directly with the number of options.
D) is unaffected by the number of options.
A
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Toward the 1970s, scientific evidence had accumulated and which of the following statements is true?
a. breast milk is far better than any substitute b. the majority of births in the United States take place at home with the use of a midwife c. cesarean sections are far riskier now then they have ever been before d. modern milk-formula is far better than breast milk
Which of the following statements best describes the conclusions about women's salaries?
a. When factors such as type of job and number of years of experience are equated, men and women receive roughly equivalent salaries. b. At every level of education, females earn much lower salaries than men do. c. Men earn significantly more than women if we consider only those who did not graduate from college; however, gender differences disappear among college graduates. d. The gender gap in salaries is larger between Black men and Black women than between White men and White women.