Laserfiche WebLink
1) If sample adequacy exists at the reclaimed site and the reference area, and the reclaimed site <br />mean is equal to or greater than Q, no statistical comparison is necessary and revegetation at <br />the reclaimed site will be deemed successful for the parameter in question. This complies with <br />the provisions of DRMS Regulation 4.15.11(2)(a). <br />2) If sample adequacy exists at the reclaimed site and the reference area, and the mean value <br />at the reclaimed site is less than Q, a "standard null' one -sided t -test with alpha error probability <br />of 0.10 will be used, in conformance with DRMS Regulation 4.15.11(2)(b), using the general form <br />of the one -sided West as follows: <br />t� = _x <br />x <br />Where: <br />x = Bond Release Block Sample Mean <br />Q = 90 % of Standard <br />S = Standard error of mean [ s / V ] <br />S = Sample standard deviation <br />n = Sample size <br />t,, = Calculated t value <br />t, = Table t value <br />The null hypothesis being tested is that the mean value at the reclaimed site is greater than or <br />equal to Q, with 90% statistical confidence. If t, is 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 (infinite degrees of freedom may be <br />used if n > 30), then the null hypothesis is not rejected, and revegetation is deemed successful. <br />3) If sample adequacy is not achieved at the reclaimed site, but is achieved at the reference area, <br />and the following 2 conditions are met: 1) a minimum of 30 samples were taken at the reclaimed <br />site, and 2) mean production at the reclaimed site is greater than Q, a "reverse null' hypothesis <br />will be tested using a one - sample one -sided t-test with alpha error probability of 0.20, in <br />(Revised: PR -06) 2.05.4(2)(e) - 62 <br />