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Where: <br />SE, = Satterthwaite- approximated Standard Error <br />sb, = bond release site (reclaimed site) sample standard deviation <br />s, = reference area sample standard deviation <br />n = bond release site (reclaimed site) sample size <br />n, = reference area sample size <br />Next, the Satterthwaite degrees of freedom are calculated as <br />Where: <br />df sat = Satterthwaite- approximated degrees of freedom <br />Lastly, a one -sided reverse -null t-test with alpha = 0.20 is used as follows: <br />(Revised: PR -06) 2.05.4(2)(e) - 36 <br />