How Have US Alcoholism Rates Changed in Recent Years

question 4

Multiple Choice

How have US alcoholism rates changed in recent years?

• A) Rates have gone up.
• B) Rates have stayed about the same.
• C) Rates are worse from some groups but much better for others.
• D) Rates have gone down.

---

Definitions:

Population Variance

A statistical measure of the distribution of values in a population, indicating how much individuals within the population differ from the population mean.

Upper Limit

The maximum value in a set or the highest value that a variable can take.

Significance Level

A threshold chosen by a researcher or statistician below which a p-value indicates a statistically significant result, rejecting the null hypothesis.

Mean Age

The average age of all individuals in a particular group or set, calculated by summing their ages and dividing by the number of individuals.