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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-x <br />S- <br />x <br />Where: <br />x = Bond Release Block Sample Mean <br />Q = 90% of Standard <br />S- = Standard error of mean <br />x <br />S = Sample standard deviation <br />n = Sample size <br />to = 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 />