Of 250 adults who tried a new multi-grain cereal, "Wow!", 187 rated it excellent; of 100 children sampled, 66 rated it excellent. What is the pooled proportion?
A) 0.723
B) 1.408
C) 0.494
D) 0.807

Question

Quizplus · Accepted Answer

The pooled proportion is calculated by dividing the total number of people who rated the cereal excellent by the total number of people sampled: (187 + 66) / (250 + 100) = 253 / 350 = 0.723.

Of 250 Adults Who Tried a New Multi-Grain Cereal, "Wow!