3. For any discrete RV, the probabilities specied by the probability formula must add up to one as you consider all values in the support.
3. For any discrete RV, the probabilities specied by the probability formula must add up to one as you consider all values in the support. That is, 1 = Z P(X = 2:). For each of the below distributions, zEsupport show that the probabilities add up to 1. In each case, you will need to use some important fact / result from your previous mathematics coursework. Make sure you explicitly note the fact as you use it; you don't need to re-derive/prove the fact. a. X N Geom(p) (Hint: Fact usually seen in Algebra 2, Precalculus, and 20B classes) b. X N Binom(n, p) (Hint: Fact usually seen when learning induction in Algebra 2 or Precalculus) c. X N Poe's\") (Hint: Fact rst seen near the end of 20B)
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