In many countries the spread of AIDS was impacted greatly by __________

The duties of the national ___________ council include advising the president on key foreign policy decisions and assisting in implementing those decision by coordinating the efforts of various agencies in the Department of State, the CIA, the military, and so on

Fill in the blank(s) with the appropriate word(s).

If a survey researcher reports that her results are accurate within four percentage points, four percent is the

a. sampling frame b. stratum c. quota d. probability e. error of estimation