Confidence interval for transformed variables

[dorothy pang <dorothy44@hotmail.com>]

Dear all,
 
I have obtained 95% CI for variables X, Y and W, and would like to obtain the 95% CI for the following new variable:
 
A= W+(In X)/Y
 
Please may I seek advice on how to go about obtaining the 95% CI for the newly derived variable A in Splus?
 
Thanks in advance.
 
 
Warm regards
Dorothy
 
 

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