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DIRECTORY ASSISTANCE - AN ARTICLE IN USA TODAY STATED THAT "INTERNAL SURVEYS PAID FOR BY...

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Basic Math

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DIRECTORY ASSISTANCE - AN ARTICLE IN USA TODAY STATED THAT "INTERNAL SURVEYS PAID FOR BY DIRECTORY ASSISTANCE PROVIDERS SHOW THAT EVEN THE MOST ACCURATE COMPANIES GIVE OUT WRONG NUMBERS 15% OF THE TIME." ASSUME THAT YOU ARE TESTING SUCH A PROVIDER BY MAKING 10 REQUESTS AND ALSO ASSUME THAT THE PROVIDER GIVES THE WRONG TELEPHONE NUMBER 15% OF THE TIME. FIND THE PROBABILITY OF GETTING ONE WRONG NUMBER.

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