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If sample adequacy has been achieved (minimum of 15 samples) in BRB PSCM -2 and the reference <br />areas, and the reclaimed area mean total allowable herbaceous cover and mean allowable herbaceous <br />production are above 90% of the reference area - derived standard, all criteria are met for a direct <br />comparison and revegetation would be deemed successful (CDMG 2005 revised rule, 4.15.11 (2)(a)). <br />Were the mean allowable herbaceous cover and /or production of the reclaimed area above 90% of the <br />reference area - derived standard, and sample adequacy was not met for the reference areas and/or BRB <br />PSCM -2 (minimum of 30 samples, technical standards not subject to sample adequacy), then the <br />hypothesis of reclamation success would be tested using a parametric test of the "reverse null" <br />hypothesis. This would be conducted using the following expression (CDMG 2005 revised rule, 4.15.11 <br />( <br />t x _Q <br />calc — <br />Sy, <br />Where: z = Bond Release Block Sample Mean <br />Q = 90% of Standard <br />S = Standard error of mean E s / <br />X <br />S = Sample standard deviation <br />n = Sample size <br />teak = Calculated t value <br />t = Table t value (alpha = 0.2) <br />The (reverse) null hypothesis being tested would be that the bond release block mean (µ) was less than <br />or equal to 90% of the standard, stated as H µ <_ Q. If t was greater than the 1- tailed t table value for <br />alpha error probability of 0.20, with (n -1) degrees of freedom then H would be rejected, and revegetation <br />would be deemed successful. <br />Were the mean allowable herbaceous cover or production of an adequate sample from the BRB less than <br />90% of the cover standard (see above), then a one - sample t -test would be made in the following form to <br />test the hypothesis of reclamation success for cover (CDMG 2005 revised rule, 4.15.11 (2)(b)): <br />6 <br />