function truncated_normal_a_mean_test ( )

%*****************************************************************************80
%
%% truncated_normal_a_mean_test() tests truncated_normal_a_mean().
%
%  Licensing:
%
%    This code is distributed under the MIT license.
%
%  Modified:
%
%    08 March 2015
%
%  Author:
%
%    John Burkardt
%
  sample_num = 1000;
  a = 50.0;
  mu = 100.0;
  sigma = 25.0;

  fprintf ( 1, '\n' );
  fprintf ( 1, 'truncated_normal_a_mean_test():\n' );
  fprintf ( 1, '  truncated_normal_a_mean() computes the mean\n' );
  fprintf ( 1, '  of the lower Truncated Normal Distribution.\n' );
  fprintf ( 1, '\n' );
  fprintf ( 1, '  The "parent" normal distribution has\n' );
  fprintf ( 1, '    mean =               %g\n', mu );
  fprintf ( 1, '    standard deviation = %g\n', sigma );
  fprintf ( 1, '  The parent distribution is truncated to\n' );
  fprintf ( 1, '  the interval [%g,+oo)\n', a );

  m = truncated_normal_a_mean ( mu, sigma, a );

  fprintf ( 1, '\n' );
  fprintf ( 1, '  PDF mean = %g\n', m );

  for i = 1 : sample_num
    x(i) = truncated_normal_a_sample ( mu, sigma, a );
  end

  ms = mean ( x );
  xmax = max ( x );
  xmin = min ( x );

  fprintf ( 1, '\n' );
  fprintf ( 1, '  Sample size =     %d\n', sample_num );
  fprintf ( 1, '  Sample mean =     %g\n', ms );
  fprintf ( 1, '  Sample maximum =  %g\n', xmax );
  fprintf ( 1, '  Sample minimum =  %g\n', xmin );

  return
end
