Question 75610: Thirty percent of the population in a southwestern community are Spanish-speaking Americans. A Spanish-speaking person is accused of killing a non-Spanish-speaking American. Of the first 12 potential jurors, only 2 are Spanish-speaking Americans, and 10 are not. The defendant’s lawyer challenges the jury selection, claiming bias against her client. The government lawyer disagrees, saying that the probability of this particular jury composition is common. What do you think?
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Answer by stanbon(75887)   (Show Source):
You can put this solution on YOUR website! Thirty percent of the population in a southwestern community are Spanish-speaking Americans. A Spanish-speaking person is accused of killing a non-Spanish-speaking American. Of the first 12 potential jurors, only 2 are Spanish-speaking Americans, and 10 are not. The defendant’s lawyer challenges the jury selection, claiming bias against her client. The government lawyer disagrees, saying that the probability of this particular jury composition is common. What do you think?
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P(person speaks Spanish)= 0.30
P(2 speak Spanish of 12) = 12C2(0.3)^2*(0.7)^10 = 66*0.09*0282475...
=0.167790....
It can happen about 17% of the time.
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Cheers,
Stan H>
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