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Error in calculation

Posted on 2016-07-21
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Can you please tell me if my calculations are correct?  Thanks.

                        Jury      Judge      Totals
Plaintiff trial win-reversed            201      73      274
Plaintiff trial win-affirmed/dismissed      420      236      656
Defendant trial win-reversed            101      70      171
Defendant trial win-affirmed/dismissed      724      304      1028
Totals                        1446      683      2129

The probability that a randomly selected case is a judge trial is--> 683/2129 = 0.3208078910286519

The probability that the final outcome of a randomly selected case is ​'plaintiff trial win is affirmed divided by
affirmed/dismissed​' is--> 656/2129 = 0.308125880695162

The probability that the final outcome of a randomly selected case is a plaintiff trial win given that the case is a jury trial is 201 / 2129 =
0.0944105213715359
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Question by:mustish1
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CompProbSolv earned 2000 total points
ID: 41723412
First answer appears correct.

Second question isn't clear.  If you mean: "The probability that the final outcome of a randomly-selected case is 'plaintiff trial win-affirmed/dismissed' then your second answer appears correct.

If I understand your third question, your answer is incorrect.  When you say "given that the case is a jury trial' I'm presuming that you mean: "The probability that the final outcome of a randomly-selected jury trial case is a plaintiff trial win".  That would be (201+420)/(274+656).

If you mean "The probability that a final outcome of a randomly-selected case is plaintiff trial win by jury" then the answer would be (201+420)/2129.
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by:mustish1
ID: 41723443
Thanks.
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