Which of the Following Is the Biggest Difference Between a "Cold

question 100

Multiple Choice

Which of the following is the biggest difference between a "cold" fish, such as a trout, and a "hot" fish, such as a tuna, relative to their thermoregulation?

• A) The temperature of the blood leaving the heart
• B) The temperature of the blood entering the gills
• C) The arrangement of blood vessels in the gills
• D) The temperature of the brain
• E) The volume of blood flowing in arteries just under the skin

Recognize how sample size affects the margin of error in confidence intervals.

Identify the appropriate t-score for constructing confidence intervals of various confidence levels and sample sizes.

Understand how t-distribution approaches the normal distribution with increasing degrees of freedom.

Apply the t-distribution for constructing confidence intervals when population standard deviation is unknown and the sample size is small.

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Definitions:

Direct Observation

A research method where data is collected by watching subjects in their natural environment without interaction.

Asynchronous

Occurring at different times or uncoordinated—for example, members of a social media site contributing individually to it, in their own time. See also synchronous.

Online Focus Group

A moderated discussion that takes place on the internet, where participants can share their thoughts and opinions on a given topic.

Demographically Dissimilar

Referring to populations that differ significantly in demographic characteristics such as age, gender, ethnicity, or socioeconomic status.