From 1977 to 2004,the Share of National After-Tax Income ________

question 13

Multiple Choice

From 1977 to 2004,the share of national after-tax income ________ for those in the top 5% and ________ for those in the bottom 90%.

• A)increased ...increased
• B)decreased ...decreased
• C)increased ...decreased
• D)decreased ...increased

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Definitions:

Chi-square Statistic

A statistic used to assess the fit of an observed distribution to an expected distribution.

Critical Value

Value of a statistic that separates the regions of rejection and nonrejection.

Degrees Of Freedom

An aspect of inferential statistical tests, representing the amount of unrestricted parameters in the data set.

Chi-square Statistic

A measure used in statistics that compares observed frequencies with expected frequencies to determine if there are significant differences.