Which Statement Correctly Compares T-Distributions to the Normal Distribution

question 28

Multiple Choice

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

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

---

Definitions:

Commercial Usefulness

The extent to which a product or service can be sold or used in a commercial context to satisfy a need or want.

Dimensions

Aspects or features that can be measured or used to define the characteristics of something.

Preferred Solution

The most favored or desirable resolution to a problem or issue among several alternatives.

Escalation of Commitment

A decision-making error in which individuals or organizations continue a course of action despite facing negative outcomes or feedback.