A Random Sample of 80 Adults Is Chosen and Their $\sigma = 40$

question 49

Multiple Choice

A random sample of 80 adults is chosen and their mean serum cholesterol level is found to be 202 milligrams per deciliter. Assume that the population standard deviation is $\sigma = 40$ Based on a 95% confidence interval for the mean serum cholesterol, is it likely that the mean serum
Cholesterol is greater than 219? (Hint: you should first construct the 95% confidence interval.)

• A) No
• B) The likelihood cannot be determined.
• C) Yes

---

Definitions:

Antitrust Laws

Legislation enacted to prevent monopolies and promote competition among businesses, ensuring fair and free market practices.

Price Control

Government policies or regulations that set or limit the price of certain goods and services in an attempt to control inflation and ensure affordability.

Steel Makers

Companies involved in the production of steel, an alloy of iron and carbon used widely in construction and manufacturing.

Attempted Monopolization

An action by a firm that involves anticompetitive conduct, the intent to gain monopoly power, and a “dangerous probability” of success in achieving monopoly power.