Find the probability that a randomly selected person was a crew​ member, given that the person survived.

College Algebra (MindTap Course List)
12th Edition
ISBN:9781305652231
Author:R. David Gustafson, Jeff Hughes
Publisher:R. David Gustafson, Jeff Hughes
Chapter8: Sequences, Series, And Probability
Section8.7: Probability
Problem 26E: Find the probability of each event. Getting 2 red eggs in a single scoop from a bucket containing 5...
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Find the probability that a randomly selected person was a crew​ member, given that the person survived.

Contingency table results:


Rows: Survival
Columns: Class

Cell format
Count
(Row percent)
(Column percent)
(Percent of total)

 

  Crew First Second Third Total
Alive 212
(29.82%)
(23.95%)
(9.63%)
203
(28.55%)
(62.46%)
(9.22%)
118
(16.6%)
(41.4%)
(5.36%)
178
(25.04%)
(25.21%)
(8.09%)
711
(100%)
(32.3%)
(32.3%)
Dead 673
(45.17%)
(76.05%)
(30.58%)
122
(8.19%)
(37.54%)
(5.54%)
167
(11.21%)
(58.6%)
(7.59%)
528
(35.44%)
(74.79%)
(23.99%)
1490
(100%)
(67.7%)
(67.7%)
Total 885
(40.21%)
(100%)
(40.21%)
325
(14.77%)
(100%)
(14.77%)
285
(12.95%)
(100%)
(12.95%)
706
(32.08%)
(100%)
(32.08%)
2201
(100%)
(100%)
(100%)
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For the same chart above>>Find the probability that a randomly selected person was a crew member or did not survive. 

I did p(A)+p(B) which gave me 1.08, rounded to two decimal places. Is that correct? I am not sure I understand the chapter explanation for two disjointed events.

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