Which Statement Correctly Compares T-Distributions to the Normal Distribution

question 63

Multiple Choice

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

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

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