Suppose That the Proportion of Young Adults Who Read at Least

question 53

Multiple Choice

Suppose that the proportion of young adults who read at least one book per month is 0.15,and this proportion is the same in Boston and New York.Suppose that samples of size 400 are randomly drawn from each city.The standard deviation for the sampling distribution of differences between the first sample proportion and the second sample proportion (used to calculate the z score) is _______.

• A) 0.0459
• B) 0.0435
• C) 0.0402
• D) 0.0335
• E) 0.0319

---

Definitions:

Acrosome

A vesicle at the tip of a sperm cell containing enzymes that help the sperm penetrate the egg.

Umbilical Cord

A flexible cordlike structure containing blood vessels and attaching a human or other mammalian fetus to the placenta during gestation.

DNA

Deoxyribonucleic acid, a self-replicating material which is present in nearly all living organisms as the carrier of genetic information.

Three Stages of Birth

The labor process divided into three parts: dilation of the cervix, delivery of the baby, and delivery of the placenta.