A Researcher Claims That the Mean Resting Pulse Rate of All

question 22

Multiple Choice

A researcher claims that the mean resting pulse rate of all college basketball players in the United States is less than the mean resting pulse rate of all professional basketball players in the United States. The resting pulse rates of a random sample of 115 college basketball players were measured as were the resting pulse rates of a random sample of 80 professional basketball players. The mean resting pulse rates of the two groups were compared.
An example of a lurking variable that might affect the results of this study is

• A) the team each player is from.
• B) the location the study was administered.
• C) whether or not the players had scholarships in college.
• D) the age of the players.

---

Definitions:

Pollution

The presence or introduction into the environment of contaminants or substances that cause harm or discomfort to organisms, including humans.

Beneficiaries

Individuals or groups who receive benefits, typically from a trust, insurance policy, or government program.

External Costs

Costs of a transaction or activity that affect people other than those directly involved in the transaction, not accounted for in the market price.

Competitive Market

A market structure characterized by a large number of firms competing against each other, leading to efficient prices and products.