(Answered) Question credit card companies will often call cardholders

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Question: Credit card companies will often call cardholders if the pattern of use indicates that the card might have been stolen. Let's say that you charge an average of $280 a month on your credit card, with a standard deviation of $75. The credit card company will call you anytime your purchases for the month exceed the 98th percentile. What is the dollar amount beyond which you'll get a call from your credit card company?

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