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    %% Compute Geometric Distribution cdf
%

% Copyright 2015 The MathWorks, Inc.


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% Suppose you toss a fair coin repeatedly, and a "success" occurs when the
% coin lands with heads facing up. What is the probability of observing
% three or fewer tails ("failures") before tossing a heads?

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% To solve, determine the value of the cumulative distribution function
% (cdf) for the geometric distribution at _x_ equal to 3. The probability of
% success (tossing a heads) _p_ in any given trial is 0.5.
x = 3;
p = 0.5;
y = geocdf(x,p)

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% The returned value of _y_ indicates that the probability of observing three
% or fewer tails before tossing a heads is 0.9375.