Consider an Urban Ecologist Who Is Interested in Whether the Presence

question 3

Multiple Choice

Consider an urban ecologist who is interested in whether the presence of high-voltage power lines influences the number of eggs laid by birds nearby. She plans to conduct a two-sample t-test and will assume that the population variances are equal. Her data are as follows:
Near (group 1) : mean = 6.1, SD = 0.35, n = 12
Far (group 2) : mean = 5.8, SD = 0.30, n = 9
What is the conclusion of the t-test?

• A) Fail to reject the null hypothesis, the mean number of eggs do not seem to differ in the two types of locations.
• B) Fail to reject the null hypothesis, the mean number of eggs seem to differ in the two types of locations.
• C) Reject the null hypothesis, the mean number of eggs do not seem to differ in the two types of locations.
• D) Reject the null hypothesis, the mean number of eggs seem to differ in the two types of locations.

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Definitions:

Deductive Reasoning

A logical process where a conclusion follows necessarily from the given premises; if the premises are true, the conclusion must also be true.

Problem Solving

The mental process of finding an appropriate way to attain a goal when the goal is not readily available.

Heritability

The proportion of variation among individuals in a population that can be attributed to genetic variations.

Intelligence Study

This refers to the scientific field of research concerned with understanding human intelligence, including how it is structured, measured, and varies among individuals.