In the case of Castaneda vs Partida, it was noted that although 80% of the population in a Texas county was Mexican-American, only 39% of those summoned for grand juries were Mexican-American. Assume that 12 jurors are to be summoned from a population that 80% Mexican-American. What is the probability that exactly 7 of the 12 jurors are Mexican-American? a) Carefully explain how this situation results in a binomial distribution. b) Write out the Binomial Probability Function without simplifying for this situation. c) Calculate the probability, to four decimal places, of selecting exactly 7 Mexican-Americans when 12 jurors were selected at random from a population that is 80% Mexican-American.

Question

In the case of Castaneda vs Partida, it was noted that although 80% of the population in a Texas county was Mexican-American, only 39% of those summoned for grand juries were Mexican-American.  Assume that 12 jurors are to be summoned from a population that 80% Mexican-American.  What is the probability that exactly 7 of the 12 jurors are Mexican-American?  a)  Carefully explain how this situation results in a binomial distribution.  b)  Write out the Binomial Probability Function without simplifying for this situation.  c)  Calculate the probability, to four decimal places, of selecting exactly 7 Mexican-Americans when 12 jurors were selected at random from a population that is 80% Mexican-American.

So p must happen ten times so: p7, and (1−p)(1−p) must happen 7 times, so: (1−p)3(1−p)7. That way the final answer, in my mind, should be p7(1−p)3p7(1−p)3 But it is not.

Could someone help me?

Writeacher · Answer

Regina/Sally/Linda ~ Pick a name and keep it please! Please also be patient for a tutor who might be well versed in statistics. Most of our math tutors aren't.

Linda Joy · Answer

Who is Regina/Sally/Linda?

Ms. Sue · Answer

If you don't know, you're in bigger trouble than we thought. They are the names who've posted from the same internet address in Spokane.