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From: kube%cogsci@UCBVAX.BERKELEY.EDU (Paul Kube)
Newsgroups: mod.ai
Subject: correction to response to Nevin, AIList V4 #120
Message-ID: <8605172253.AA05508@cogsci.Berkeley.EDU>
Date: Sat, 17-May-86 18:53:31 EDT
Article-I.D.: cogsci.8605172253.AA05508
Posted: Sat May 17 18:53:31 1986
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Instead of 
	
	Since the standard deviation of the difference of two
	identically normally distributed random variables is twice the
	standard deviation of either variable, the temporal disparity 
	measurement has 95% confidence interval of 4*10^-6 seconds.

I should have said
	
	Since the standard deviation of the difference of two
	identically normally distributed random variables is less than 
	twice the standard deviation of either variable, the 
	temporal disparity measurement has 95% confidence interval 
	of less than 4*10^-6 seconds.

The argument for getting to 4*10^-7 second accuracy still holds.

Paul Kube
Berkeley EECS
kube@berkeley.edu