The National Health and Social Life Survey, conducted to gather information about the eating habits of U. S. adults between the ages of 18 and 59, is an example of , in that every member of the larger group has an equal chance of being selected for inclusion in the sample.

The answer is random selection.

Explanation:

Random selection refers to a process in which there is a representative sample that is used for a specific study. Random means that people that are involved in the sample are chosen by chance. Thus, there are the same probabilities for each person to be chosen.

A random selection is important to scientists because the scientist's purpose is to generalize his or her findings related to the whole population. However, the purpose is not testing the whole population. Thus, the scientist chooses a specific group of people and selects people at random.    

panem is a communist totalitarian dictatorship where all the resources and how they are allocated belongs to the capitol. the districts exist only to provide goods and services for the capital and most of the citizens live in poverty. it is a police state where the "peacekeepers" use force and threats to keep the people under control. dissent is outlawed and those who disobey the law are executed, flogged, or turned into avoxes. the games are another means in which the ruling elite in the capitol exert their power over the districts. when reading the books i drew parallels between panem and the soviet union and north korea. in no way is panem capitalist. the people in the capitol are wealthy but the majority of them are involved in the government somehow. it was the same way in the former soviet union where bigwigs in the communist party and high ranking government officials were given access to goods, services, medical treatments not available to the general public. if you think panem has a capitalist economy you need to brush up on your economics.  

hygrometers and hair thermometers (often found as part of hygrometers/psychrometers) can be used to measure humidity. barometers are used to measure atmospheric pressure, while anemometers are used to measure wind speed. so the 2nd and 4th choices should be the correct answers.