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81.0-Logic, Inc. <br />Where: <br />SEsat = Satterthwa ite-a pproxi mated Standard Error <br />sbl = bond release site (reclaimed site) sample standard deviation <br />sref = reference area sample standard deviation <br />nbr = bond release site (reclaimed site) sample size <br />nref = reference area sample size <br />Next, the Satterthwaite degrees of freedom are calculated as <br />Equation 4 (SE.), <br />_ (SE_)t +((QJ(SE,))' <br />(n,-1) n?--I <br />Where: <br />dfsat = Satterthwa ite-approxi mated degrees of freedom <br />www.bio-geo.com <br />Lastly, a one-sided reverse-null t-test with alpha = 0.20 is used as follows: <br />Equation 5 t -0.9Fk4) <br />- S? <br />Where: <br />t = calculated t-value <br />Xbr = bond release site (reclaimed site) sample mean <br />Xfef = reference area sample mean <br />The null hypothesis being tested is that the mean value for the reclaimed site is less than or <br />equal to Q. If the null hypothesis is rejected vegetation is successful. <br />7