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HYPOTHESIS TESTING APPROACHES <br />For formal hypothesis testing relative to Phase II Bond Release the following procedures were <br />followed: <br />For cases where the mean allowable herbaceous cover of Phase II BRB PSCM -2 was greater <br />than the reference area -based technical standard, then the hypothesis of reclamation success <br />was tested using a parametric test of the "reverse null" hypothesis. This was conducted using the <br />following expression (CDMG 2005 revised rule, 4.15.11 (2)(c)): <br />— Q <br />t _ <br />S <br />Where: x = Bond Release Block Sample Mean <br />Q = 90% of Standard <br />S- = Standard error of mean [s/ ] <br />S = Sample standard deviation <br />n = Sample size <br />t, = Calculated t value <br />t = Table t value (alpha = 0.2) see Rohlf and Sokal 1969 <br />If t, was greater than the 1- tailed t table value for alpha error probability of .20, with (n -1) degrees <br />of freedom then Ho would be rejected, and revegetation was deemed successful. <br />Were mean allowable herbaceous cover of an adequate sample from the Phase II BRB PSCM -2 <br />less than 90% of the cover standard (see above), then a one - sample t -test (using the reverse null <br />hypothesis, stated as H µ s Q)was made in the following form to test the hypothesis of <br />reclamation success for cover (CDMG 2005 revised rule, 4.15.11 (2)(b)): <br />6 <br />