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T <br />• • <br />~y' Mr. 'tom Guobis <br />November 25, 1981 <br />Page Two <br />f <br />5. Following is the corrected t-test formula to replace an <br />incorrect formula on Page 17 of Addendum I, Response to Prelimin- <br />ary Adequacy Review Comments, Canadian Strip Mine, Jackson County <br />Colorado July 28, 1981. <br />t = X - X <br />e m r <br />ISp2 (Nm+Nr) <br />N N <br />m r <br />where: Sp2 = (vm) (Nn-1) (~ ) (Nr-1) <br />(Nn-1) + (Nr-1) <br />IF you have any further questions reyardiny these responses <br />or need further information please do not hesitate to contact me. <br />Sincerely, <br />J)j n ~ ~~ <br />~. ~. ~. <br />Da///vid D7. Stout <br />Environmental Coordinator <br />DMS/tl <br />cc: Richard Dominyue <br />Reclamation Specialist <br />423 Centennial Building <br />1313 Sherman Street <br />Denver, Colorado 80203 <br />