The Population of Americans Age 55 Yr and Over as a Percent

question 73

Multiple Choice

The population of Americans age 55 yr and over as a percent of the total population is approximated by the function where t is measured in years, with t = 0 corresponding to 2000. Compute .

• A) per year in the second power
• B) per year in the second power
• C) per year in the second power
• D) per year in the second power
• E) per year in the second power

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Definitions:

Population Mean

The average value of all individuals or items in a defined population.

Confidence Coefficient

The probability level associated with a confidence interval, indicating the frequency with which an estimated interval would include the parameter if the experiment were repeated.

T Value

A value computed from a sample data used in a t-test in statistics that measures the size of the difference relative to the variation in your sample data.

Confidence Interval

A swath of numerical values, from statistics of a sample, aimed at covering the unascertained value of a population parameter.