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I
The tdistribution is a symmetric distribution about the mean zero (like the zdistribution)

II
the tdistribution is a continuous distribution

III
the tdistribution has broader tails, that is, more area or probability towards the ends than a zdistribution.

IV
If the sample size n approaches ∞ then the tdistribution approaches the zdistribution

V
If the sample size is n, then t has an n1 degree of freedom. The shape of the tdistrubution curve depends upon the degree of freedom (the higher the d.f. the closer to zdistribution)

