Consider an Urban Ecologist Who Is Interested in Whether the Presence

question 15

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. He plans to conduct a two-sample t-test and will assume that the population variances are equal. His data are as follows:
Near (group 1) : mean = 6.1, SD = 0.35, n = 9
Far (group 2) : mean = 5.8, SD = 0.30, n = 12
What is the standard error of the difference between the two means?

• A) 0.142
• B) 0.145
• C) 0.148
• D) 0.151

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Definitions:

Perceptual Development

Refers to the process by which individuals learn to make sense of sensory input, allowing them to interpret and understand the world around them.

Fixation Time

The amount of time spent looking at a visual stimulus.

Visual Stimulus

Any external object or event that is seen and which can influence a person's behavior or emotions.

Crystallized Intelligence

The ability to utilize acquired knowledge and experience.