Suppose that it takes at least 9 votes from a 12-member jury to convict adefendant. Suppose also that the probability that a juror votes a guilty personinnocent is .2, whereas the probability that the juror votes an innocent personguilty is .1. If each juror acts independently and if 65 percent of the defendantsare guilty, find the probability that for a randomly selected case the jury rendersa correct decision? (Hint: Use the law of total probability)

A First Course in Probability (10th Edition)
10th Edition
ISBN:9780134753119
Author:Sheldon Ross
Publisher:Sheldon Ross
Chapter1: Combinatorial Analysis
Section: Chapter Questions
Problem 1.1P: a. How many different 7-place license plates are possible if the first 2 places are for letters and...
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Suppose that it takes at least 9 votes from a 12-member jury to convict a
defendant. Suppose also that the probability that a juror votes a guilty person
innocent is .2, whereas the probability that the juror votes an innocent person
guilty is .1. If each juror acts independently and if 65 percent of the defendants
are guilty, find the probability that for a randomly selected case the jury renders
a correct decision? (Hint: Use the law of total probability)

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