Posted by **Carlos** on Sunday, March 25, 2007 at 12:42pm.

During the last hour, a telemarketer dialed 20 numbers and reached 4 busy signals, 3 answering machines, and 13 people. Use this information to determine the empirical probability that the next call will be answered in person.

it is 13/20, unless he dares call my number. Then it is zero.

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