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(Choose 1 answer)
☐ A
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A. (0.04, 0.18)
B. (0.02. 0.14)
C. (0.05, 0.15)
D. (0.03, 0.17)
A random sample of 400 adult residents of Maricopa County found that
320 were in favor of increasing the highway speed limit to 75 mph, while
another sample of 300 adult residents of Pima County found that 210
were in favor of the increased speed limit. Construct a 90% confidence
interval on the difference in the two proportions p₁ - P₂ of adults who
favor increased speed.
Let Zoo25 = 1.96, Zoos = 1.65
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