Customers of the Key Refining Company Charge an Average of $70

question 63

Multiple Choice

Customers of the Key Refining Company charge an average of $70 per month. The distribution of amounts charged is approximately normal,with a standard deviation of $10. What is the probability of selecting a credit card customer at random and finding the customer charged between $70 and $83?

• A)0.1962
• B)0.4032
• C)0.3413
• D)0.4750

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Definitions:

Nationwide

Something that extends or applies across an entire country or nation.

United States

A country in North America comprising 50 states, a federal district, and several territories.

Anonymity

The state of being unknown or unidentifiable, often used to protect privacy or security.

Discrimination

Unjust or prejudicial treatment of different categories of people or things, especially on the basis of race, age, or sex.