A Wilcoxon Rank Sum Test for Comparing Two Populations Involves

question 78

Multiple Choice

A Wilcoxon rank sum test for comparing two populations involves two independent samples of sizes 15 and 20. The un-standardized test statistic (that is the rank sum) is T = 210. The value of the standardized test statistic z is:

• A) 14.0
• B) 10.5
• C) 6.0
• D) -2.0
• E) -3.2

---

Definitions:

Independent

Not being influenced or controlled by others; having the freedom to think, act, and make decisions by oneself.

Real GDP

The measure of a country's economic output adjusted for price changes, reflecting the real quantity of goods and services produced.

Spending Multiplier

The ratio of a change in aggregate income to the initial change in spending that brought it about, illustrating the larger impact on income.

Government Purchases

Expenditures made by the public sector on goods and services, including infrastructure and public safety.