Life Expectancy in the U

question 51

Multiple Choice

Life expectancy in the U.S. is currently _____ years.

• A) 68
• B) 72
• C) 75
• D) 79
• E) 84

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Definitions:

Probability Sampling

A sampling method that gives every member of the population a known chance of being selected.

Public Opinion Survey

A systematic method of collecting and analyzing individuals' views towards various topics, often used in political science and marketing.

Sampling

The process of selecting a subset of individuals, objects, or observations from a larger population for the purpose of making inferences about the population.

Telephone Sampling Frames

A list or database of telephone numbers from which a sample is drawn for the purpose of conducting research via phone calls.