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S_ = standard error of mean [ s / �n <br />z <br />S = sample standard deviation <br />n = sample size <br />to = calculated t value <br />tt = table t value (alpha = 0.2) <br />The (reverse) null hypothesis being tested would be that the bond release block mean (p) was less than <br />or equal to 90% of the standard, stated as Ho: µ <_ Q. If t, was greater than the 1 -tailed t table value for <br />alpha error probability of 0.20 and n-1 degrees of freedom then Ho would be rejected, and revegetation <br />would be deemed successful. <br />Were the mean allowable herbaceous cover and/or production of an adequate sample (minimum of 15 <br />samples, technical standards not subject to sample adequacy) from the BRB-3 less than 90% of the <br />cover standard (see above), then a one -sample t-test would be made in the following form to test the <br />hypothesis of reclamation success for cover (CDMG 2005 revised rule, 4.15.11 (2)(b)): <br />t _Q—x <br />S - <br />x <br />Where: x = Bond Release Block Sample Mean <br />Q = 90% of standard <br />S- = standard error of mean [,I -,r] <br />T <br />S = sample standard deviation <br />n = sample size <br />tc = calculated t value <br />tt = table t value (alpha = 0.1) <br />The (traditional) null hypothesis being tested would be that the bond release block mean (µ) was greater <br />than or equal to 90% of the standard, stated as Ho: p >_ Q. If t, was less than or equal to the 1 -tailed t table <br />value for alpha error probability of 0. 10, at (n-1) degrees of freedom, then Ho was not rejected, and <br />revegetation was deemed successful. <br />r;� <br />