Here is a math question for all of you, taken directly from “Fundamentals
of Probability with Stochastic Processes” by Saeed Ghahramani, Dean of the
School of Arts & Sciences and Professor of Mathematics at Western New England
College:
A child gets lost in the Disneyland at the Epcot Center in Florida. The
father of the child believes that the probability of his being lost in the east
wing of the center is 0.75 and in the west wing is 0.25. The security
department sends an office to the east and an officer to the west to look for
the child. If the probability that a security officer who is looking in the
correct wing finds the child is 0.4, find the probability the child is found.
Read the first line again. Consider the references to the
layout of Epcot. Not good is it?
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