Figure 53-3 Use the Figure to Answer the Corresponding Question(s)

question 25

Multiple Choice

Figure 53-3
Use the figure to answer the corresponding question(s) .
-Using the data in Figure 53-3, the cause of the decline of the wolf population in 1982 was:

• A) a sharp decrease in food supply.
• B) a decrease in the intrinsic rate of increase for the wolf population.
• C) competition with a newly introduced predator.
• D) introduction of a disease organism.
• E) cannot be determined from the data provided.

---

Definitions:

Test Statistic

A calculated value used in statistical hypothesis testing to determine whether to reject the null hypothesis.

Chi-Square Test

A statistical test used to determine whether there is a significant association between two categorical variables.

Independence

A concept in probability and statistics indicating that two events or variables have no association or influence on each other.

Categorical Variables

Variables that represent categories and can take on a limited, and usually fixed, number of possible values.