A DIRECTORY ASSISTANCE AN ARTICLE IN USA TODAY STATED THAT INTERNAL SURVEYS PAID FOR BY DIRECTORY ASSISTANCE PROVIDERS SHOW THAT EVEN C 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 B CELL PHONES 30 OF THE CELL PHONE USERS IN TEXAS USE A MOTOROLA PHONE DETERMINE THE PROBABILITY THAT IF SIX CELL PHONE USERS IN TEXAS ARE SELECTED AT RANDOM EXACTLY FOUR OF THEM USE A MOTOROLA CELL PHONE C AIR AMERICA HAS A POLICY OF BOOKING AS MANY AS 15 PERSONS ON AN AIRPLANE THAT CAN SEAT ONLY 14 PAST STUDIES HAVE REVEALED THAT ONLY 85 OF THE BOOKED PASSENGERS ACTUALLY ARRIVE FOR THE FLIGHTS FIND THE PROBABILITY THAT IF AIR AMERICA BOOKS 15 PERSONS NOT ENOUGH SEATS WILL BE AVAILABLE