An Economist Is Interested in Studying the Incomes of Consumers

question 31

Multiple Choice

An economist is interested in studying the incomes of consumers in a particular region. The population standard deviation is known to be $1,000. A random sample of 50 individuals resulted in an average income of $15,000. What is the width of the 90% confidence interval?

• A) $364.30
• B) $728.60
• C) $232.60
• D) $465.23

---

Definitions:

Jumps in Place

The physical activity of leaping vertically off the ground without traveling any distance horizontally, often used in exercise or play.

Throws Ball Overhand

A developmental milestone in children where they are able to throw a ball using an arm motion that goes above their head.

Car Safety Seats

Devices designed to secure children in vehicles, providing protection against injury in the event of an accident.

Convertible Car Seat

A type of car seat designed to grow with the child, converting from a rear-facing baby seat to a forward-facing seat and sometimes even to a booster seat.