Two Early Humans Go Hunting for Food

question 347

Multiple Choice

Two early humans go hunting for food. They have comparable intelligence. Brawn is strong and fast; Timorous is scrawny and easily tired by vigorous exercise. The men are attacked by a panther. They both run, but Timorous lags behind and is killed by the panther. The panther then chases and overcomes Brawn, who manages to fight off the panther and escape. Brawn passes his strength and speed on to many children; Timorous had only one child before he died. What process is responsible for Brawn's having more offspring than Timorous?

• A)natural selection
• B)behavioural neuroscience
• C)humanism
• D)social constructivism
• E)a self-fulfilling prophecy

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Definitions:

Slope

The measure of the steepness or incline of a line, defined as the ratio of the change in the y-variable to the change in the x-variable.

Mean Value

The average of a set of numerical data, calculated by dividing the sum of all values by the number of values.

Confidence Interval

A range of values, derived from sample statistics, that is likely to contain the value of an unknown population parameter.

Independent Variable

In statistical analysis, a variable that is manipulated to observe its effect on another variable, often called the dependent variable.