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

question 281

Short Answer

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 corresponding to 2000.
​Compute . Round your answer to the nearest thousandth. __________% per year in the second power

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Definitions:

Quantitative Data

Numerical data that can be measured or counted, often used in statistical analysis to quantify behaviors, opinions, or other defined variables.

Linearly Related

A term describing two or more variables that change together in a way that can be represented with a straight line in a graph.

Spearman Rank Correlation

A statistic used to measure the strength and direction of association between two ranked variables.

Pearson Correlation

A measure of the linear correlation between two variables X and Y, giving a value between -1 and 1.