R help - May 2004 - Tree() and confidence intervals

Hello

	I'm currently using Monte Carlo techniques to estimate prices (variable not
static) from the following type of data:

	1,22,40,22,33,5,2000
	3,45,33,6,7,0,3000
	22,22,33,44,55,66,70000



	Each row is a record from group A and the cells in all but the last column are
the volumes of 'widgets' in the record. The last column is the cost of
all the widgets in the record. Any widget can have a different prices in each
record but the price is assumed to be normally distributed with a starting price
and deviation.

	The aim is to apply the estimated prices to eg an average record (in terms of
volumes of widgets per record) from group B and compare the cost of this average
record against the cost of an average record from group A.

	I've used a Monte Carlo approach to estimate confidence intervals but
thought another view could be obtained by using tree() to split the records into
two disparate groups and run these two groups separately through the Monte Carlo
model.

	Is this feasible?

thanks