Question: Let T tn. (a) Show that E[T ] = 0 if n > 1 and does not otherwise exist. (b) Calculate E |T

  Let T ∼ tn.

(a) Show that E[T ] = 0 if n > 1 and does not otherwise exist.

(b) Calculate E



|T |

k 

.

(c) Determine which moments exist.

(d) Show (7.46).

(e) Show (7.47).

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