Consider the following research question: Is the age of vehicle (in years) related to seat belt use (yes/no) in U. S. drivers over 21? The role type classification for this problem is:

How are decisions by the supreme court under chief justice john marshall strengthened federal power

How can changes in technology or consumer demand make it difficult for people to get jobs? by changing the number or kind of jobs available by making it possible for some people to work fewer hours by making it difficult for people to buy what they want by creating a demand for things that are not available

Which nims management characteristic involves using standardized names and definitions for major organizational functions and units?