Which of the following is true about the t-distribution?
A.They are uni-modal and symmetric.
B.Regardless of the degrees of freedom it has fatter tails than the normal model.
C.As the degrees of freedom increase, the t-curve looks more and more like the normal.
D.All of the above.

B) Normal distribution is said to lack 'uncertainty'. Because of this, its more concentrated on values near the mean, while t-student distributions have more spread values and, as a result, fatter tails.

C) This is true as well, the higher the degrees of freedom, the less uncertainty the t-student has, and they will become as a result, more and more similar to the Normal distribution.

All options are True, so option D is the answer.

Which of the following is true about the t-distribution? A.They are uni-modal and symmetric. B.Regardless of the degrees of freedom it has fatter tails than the normal model. C.As the degrees of freedom increase, the t-curve looks more and more like the normal. D.All of the above.

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Which of the following is true about the t-distribution?
A.They are uni-modal and symmetric.
B.Regardless of the degrees of freedom it has fatter tails than the normal model.
C.As the degrees of freedom increase, the t-curve looks more and more like the normal.
D.All of the above.