Which of the following best describes the characteristics of a "scientific" poll?
a. digit dialing from a small population with random selection
b. a sample of at least 1,000 people with no selection bias
c. random digit dialing with social desirability effect on a sufficiently large population
d. representative sample from a sufficiently large population with no selection bias

Why would nations in latin america be part of a mostly arab cartel group known as opec? a) latin america refused to do business with countries that were not part of opec. eliminate b) natural resources such as oil are a major economic development for some latin american countries. c) latin america has a long history of distrust of the united states and fears a take-over of oil fields. d) latin american nations such as venezuela needed in getting natural resources to other parts of the world. 15

The most heavily populated areas of africa are found

Aconsumer is a buyer of services. true false