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Chapter 6 Review Homework
11. Twelve jurors are randomly selected from a population of 4 million residents. Of these 4 million residents, it is known that 45% are of a minority race. Of the 12 jurors selected, 2 are minorities.
(a) What proportion of the jury described is from a minority race?
(b) If 12 jurors are randomly selected from a population where 45% are minorities, what is the probability that 2 or fewer jurors will be minorities?
(c) What might the lawyer of a defendant from this minority race argue?
(a) The proportion of the jury described that is from a minority race is
b) The probability that 2 or fewer out of 12 jurors are minorities, assuming that the proportion of the population that are minorities is 45%, is ____
(c) Choose the correct answer below.
- The number of minorities on the jury is unusually high, given the composition of the population from which it came.
- The number of minorities on the jury is unusually low, given the composition of the population from which it came.
- The number of minorities on the jury is reasonable, given the composition of the population from which it came.
- The number of minorities on the jury is impossible, given the composition of the population from which it came.
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This question is taken from Math 227 – Statistics » Summer 2021 » Chapter 6 Review Homework