The Probability That a Customer Will Use a Stolen Credit

question 89

Multiple Choice

The probability that a customer will use a stolen credit card to make a purchase at a certain Target store is 0.003. If 400 purchases are made in a given day, what is the approximate Poisson probability that 4 or fewer will be with stolen cards?

• A).0053
• B).0076
• C).9923
• D).0555

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Definitions:

Fretting

Wear at the contact surfaces of two materials that occurs from repeated cyclical motion or vibration, often seen in electrical connections.

Thermal Cycling

A pattern of heating and cooling that, over time, can cause resistance to build up in electrical connections.

Amps

A unit of electric current, short for amperes, indicating the amount of electrical charge passing a point per second.

Voltmeter

An electrical measuring instrument used to measure the electrical potential difference between two points in an electric circuit.