Which Statement Correctly Compares T-Distributions to the Normal Distribution

question 82

Multiple Choice

Which statement correctly compares t-distributions to the Normal distribution?
I. t distributions are also mound shaped and symmetric.
II. t distributions are more spread out than the normal distribution.
III. As degrees of freedom increase, the variance of t distributions becomes larger.

• A) II only
• B) I, II, and III
• C) I only
• D) I and II only
• E) I and III only

---

Definitions:

Antagonist

A drug that blocks a neurotransmitter’s effects.

Schizophrenia

Schizophrenia is a chronic brain disorder characterized by distorted thinking, perceptions, emotions, language, self-awareness, and behavior.

Cerebellum

A region of the brain that plays a significant role in motor control, balance, coordination, and motor learning, situated below the cerebral hemispheres and behind the brainstem.

Muscle Coordination

The harmonious function of muscle groups to produce movements that are smooth, efficient, and controlled.