Fat-tailed sheep are a common sight in the Near East.Some fat-tailed sheep are spotted, whereas others are solid colored.Of those that have a solid color, a small percentage of these fat-tailed sheep are completely black.If we randomly observe 18 black fat-tailed sheep out of a total of 218 sheep, what interval can we be 90% certain contains the population proportion of black fat-tailed sheep?
A) (0.052, 0.113)
B) (0.046, 0.119)
C) (0.059, 0.107)
D) (0.039, 0.126)

Question

Quizplus · Accepted Answer

The correct answer is A because the interval (0.052, 0.113) is the 90% confidence interval for the population proportion of black fat-tailed sheep.

Fat-Tailed Sheep Are a Common Sight in the near East