Kizspy | Question: 72
(Choose 1 answer)
(See picture)
Α. (0.03, 0.17)
Β. (0.05, 0.15)
C. (0.04, 0.18)
D. (0.02, 0.14)
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 20.025 1.96, 20.05 1.65
