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Where: <br />SEsac = Satterthwaite- approximated Standard Error <br />sb, = bond release site (reclaimed site) sample standard deviation <br />S,f = reference area sample standard deviation <br />n = bond release site (reclaimed site) sample size <br />na?f = reference area sample size <br />Next, the Satterthwaite degrees of freedom are calculated as <br />4 <br />(� _ ( �a) <br />S[II 4 <br />4 + <br />n <br />Where: <br />df = Satterthwaite- approximated degrees of freedom <br />Lastly, a one - sided reverse - null t-test with alpha = 0.20 is used as follows: <br />X� 409)X <br />t= SE <br />PR -06 June 2010 2.05.4(2)(e) - 35 <br />