Question 211641
can anybody help with this one I can't get the solution 
During the last hour, a telemarketer dialed 25 numbers and reached 7 busy signals, 3 answering machines, and 15 people. Use the information to determine the empirical probability that thenext call will be answered in person.
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Ans: 15/25 = 3/5
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Cheers,
Stan H.