Which of the following statements about the t - distribution is/are NOT TRUE? Select all that apply. A) A  t - distribution is a discrete probability distribution. B. A  t - distribution which has a d. f. of 15 has a heavier tail than a t  - distribution which has s d.f. of 12. C) As the sample size decreases, the t - distribution approaches a standard normal. D.) The degree of freedom is equivalent to the number of independent observations set of data. E) If the sample size of a t  - distribution is 8, then its degrees of freedom is 7.

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