Larger Mammals Need More Oxygen Than Smaller Mammals, but They

question 68

Multiple Choice

Larger mammals need more oxygen than smaller mammals, but they need less oxygen per gram of body weight. Smaller mammals meet their need for more oxygen with a _______ mass-specific heart size and a _______ heart rate.

• A) bigger; faster
• B) smaller; faster
• C) similar; faster
• D) bigger; slower

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Definitions:

Statistical Significance

Indicates that the observed results are unlikely to have occurred by chance, according to a predefined level of significance.

Type I Error

The statistical mistake of rejecting a true null hypothesis, also known as a "false positive."

Type II Error

The error that occurs when one fails to reject a false null hypothesis, also known as a false negative.

Power

The probability that a statistical test will correctly reject a false null hypothesis, or the test's sensitivity to detecting an effect.