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.

D) All options are True

Step-by-step explanation:

A) t-distribution are symmetrical and uni-modal like Normal the Normal distribution.

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.

step-by-step explanation:

the shape,the size and the distance

question: how many people can she serve?

answer: she can serve 16.66666667 people. so she can only give 16 people a complete serving.

question: does she have enough ice cream for her guests?

answer: no. explanation: she only has enough for 16 people to have a full serving. however, she can give a 17th person a partial serving.