Use the table below to answer the question:
1.a. "Marginalize" the probability distribution to compute the
survival probability by Sex alone
1.b. Compute the expectation of the survival over the Sex R.V.
Homework Answers
1(a)
The marginla distribution is
P(sex =1) = 0.131579 + 0.049708 + 0.137427 = 0.318714
P(sex =2) = 0.266082+ 0.204678+ 0.210526= 0.681286
1b)
E(sex variable) = 1 * 0.318714 + 2 * 0.681286 = 1.681286
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