Which of the Following Explains Why Older Americans Are Less

question 42

Multiple Choice

Which of the following explains why older Americans are less likely to be poor now compared to the 1960s?

• A) People started working until age 60, which boosted their incomes.
• B) The Social Security program has distributed money to retired persons.
• C) People are retiring earlier to cash in on employment benefits they have paid into their entire careers.
• D) Older people are no longer responsible for taking care of extended family in their old age.

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Definitions:

Wilcoxon Rank Sum Test

A non-parametric statistical test used to compare two independent samples to determine if they come from the same distribution.

Null Hypothesis

A default hypothesis that there is no significant difference or effect, often represented as H0 in statistical tests, to be tested against an alternative hypothesis.

Wilcoxon Test

A non-parametric statistical test used to compare two paired groups and determine whether their population mean ranks differ.

Expected Value

A measure in probability and statistics indicating the average outcome of a random event, calculated as the weighted average of all possible values.