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probability of 0.20, with (n-1) degrees of freedom then Ho would be rejected, and revegetation would be <br /> deemed successful. <br /> 3) If the mean allowable herbaceous cover of an adequate sample from the BRB less than 90% of <br /> the reference area-derived standard (minimum of 15 samples, technical standards not subject to <br /> sample adequacy) (see above), then the hypothesis of reclamation success would be tested <br /> using a parametric test of the "standard" null hypothesis. This would be conducted using the <br /> following expression (CDMG 2005 revised rule, 4.15.11 (2)(b)): <br /> t — Q—T <br /> S_ <br /> Where: <br /> x = Bond Release Block Sample Mean <br /> Q = 90% of Standard <br /> S- = Standard error of mean <br /> S = Sample standard deviation <br /> n = Sample size <br /> tc = Calculated t value <br /> tt = Table t value (alpha = 0.1) <br /> The null hypothesis being tested would be that the bond release block mean (µ)was greater than or <br /> equal to 90% of the standard, stated as Ho: µ>_ Q. If to was less than or equal to the 1-tailed t table value <br /> for alpha error probability of 0.10, at (n-1) degrees of freedom, then Ho was not rejected, and revegetation <br /> was deemed successful. <br /> SPECIES DIVERSITY <br /> Species diversity is not a criterion for Phase II Bond Release evaluations. The following is provided as an <br /> assessment of progress toward future bond release standards for informational purposes only. Species <br /> diversity will be judged using the following four tests present in the provisions of the permit; success will <br /> be demonstrated by passing the first (A) and at least two of the remaining three (B, C, and D). <br /> 7 <br />