katietinary5167 katietinary5167

26-03-2024
Mathematics

contestada

Suppose that X can take the values 0, 1, 2, 3, and 4, and the probability distribution of X is incompletely specified by the function
f(x)= 1/4 (3/4)ˣ for x = 0,1,2,3
Find (a) f(4) (b) P[X ≥ 2] (c) E(X) and (d) sd(X).
5.101
a. 81/256
b. .5625
C. 2.051
d. 1.599

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