Date:         Sat, 24 Feb 1996 07:36:24 -0800
Reply-To:     Lanny Miller <millerlj@TRAVELLER.COM>
Sender:       "SPSSX(r) Discussion" <SPSSX-L@UGA.CC.UGA.EDU>
From:         Lanny Miller <millerlj@TRAVELLER.COM>
Organization: Traveller Information Services
Subject:      Random walker

1.  I would like help in solving this problem.  How can I set up the
problem manually to solve it? The problem is:
 
        Suppose a person is standing on a street corner when he/she
decides to go for a walk.  Assume that there is an equal probability of
the walker going north, south, east, or west as he/she reaches the next
corner.  If the walker proceeds for a total of ten blocks, what is the
possibility that he/she will end within 2 blocks of where he started?
 
2.  Would appreciate assistance in manually setting up the problem (as
opposed to doing by computer package/code writing.  If more convenient to
group members, please email answer directly to me at:
 
millerlj@traveller.com
 
THANKS