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67 <br />t� = sl - � <br />2 2 <br />SI S2 <br />nl-1 nx-1 <br />x bar = release area mean crop production, <br />x bare = reference area mean crop production, <br />S1 2= release area sample variance, <br />s2 =reference area sample variation <br />nj = release area sample size and <br />n2 = reference area sample size. <br />The table value to be compared with tcalc will be selected from a standard table of critical <br />values for the Student's t -distribution. The test will be one -tailed with oo = 0.1. However, <br />because the denominator in equation 6 is not quite as efficient as the denominator in <br />equation 5, the degrees of freedom must be calculated using equation 7. <br />(7) <br />2 2 2 <br />( As1 + sz ) <br />i - 1 n2 - i <br />df - - 2 <br />2 2 2 2 <br />sl 1 + SZ 1 <br />(nl - 1) (ni - 1) (n2 _ 1) (n2 + �) <br />S1 2= release area sample variance, <br />$22 =reference area sample variation <br />n1= release area sample size and <br />n2 = reference area sample size. <br />Woody plant density will be determined by conducting a total census within each clump. <br />All shrub and tree species , which have been established over two growing seasons and <br />area alive and healthy, will be identified and counted. <br />The results of revegetation sampling studies will be contained in the annual <br />reclamation report. The presentation will include the raw field data, a <br />summary of the analyses, and results of the analyses. <br />(2)(t) Disposal of Debris, Acid -Forming and Toxic Forming Materials <br />Section 2.05 RN -6 10/17/2016 <br />