For this question, assume Pr[A] = .3, Pr[B] = .4, and Pr[A ∩ B] = .15. Find the following values. (Be careful on parts c and d! Think about what the formula is. You may need a Venn diagram to help you with those problems). (a) Pr[A|B]. (b) Pr[B|A]. (c) Pr[A|B compliment].

A First Course in Probability (10th Edition)
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Chapter1: Combinatorial Analysis
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For this question, assume Pr[A] = .3, Pr[B] = .4, and Pr[A ∩ B] = .15. Find the following values. (Be
careful on parts c and d! Think about what the formula is. You may need a Venn diagram to help you
with those problems).
(a) Pr[A|B].
(b) Pr[B|A].
(c) Pr[A|B compliment].

Expert Solution
Step 1

Given data are:

PrA=0.3

PrB=0.4

PrA∩B=0.15

(a) The PrA/B is given as :

PrA/B=PrABPrB=0.150.4=0.375 

Therefore, PrA/B is 0.375

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