Laserfiche WebLink
i <br />}d.magna <br />?rogram <br />!RESULTS <br />COt: C . <br />-Mountain Coal Co. <br />run on 04-10-2001 <br />CALCULATED USING <br />[~' UMB ER <br />E?:POSED <br />---------- <br />100 ------- <br />20 <br />,a <br />75 20 <br />50 20 <br />25 20 <br />.~ 1.9 20 <br />017-4/6/01 <br />at 12:37:55 <br />THE BINOMINAL METHOD <br />------------- <br />NUMBEP. -------------- <br />PERCENT ---------------------------- <br />BINOMIAL <br />DEAD <br />- <br />-- DEED <br />--------- <br />---- PROB.(PERCEN'P) <br />----------------------- <br />---- <br />------ <br />3 - <br />15.00 ----- <br />0.1288 <br />1 5.00 0.0020 <br />0 0.00 LESS THAN 0.001 <br />0 0.00 LESS THAN 0.001 <br />0 0.00 LESS THAN 0.001 <br />AT A CONFIDENCE LEVEL OF 95 PERCENT, THE BINOMIAL TEST <br />-,SHOWS THAT THE LC50 IS ABOVE 100 <br />THE USEFULNESS OF ANY LC50 CALCULATED FROM THZS SET OF DATA <br />IS QUESTIONABLE BECAUSE A CONCENTRATION-EFFECT RELATIONSHIP <br />HAS NOT BEEN DEMONSTRATED OVER A REASONABLE RANGE (e.g. <br /><37 TO>63 OF PERCENT DEAD <br />NEITHER THE APPROXIMATE LC50 CALCULATION NOR THE MOVING <br />AVERAGE METHOD CAN BE USED WZTH THIS SET OF DATA. <br />EITHER THE HIGHEST CONCENTRATION KILLED LESS THAN 50 <br />_ PERCENT OR THE LOWEST KILLED MORE THAN 50 PERCENT. <br />'IF THE PROBIT SLOPE IS NEGATIVE, ENTER THE DATA AGAIN <br />_ USING THE NUMBER ALIVE INSTEAD OF THE NUMBER DEAD. <br />_~ <br />J <br />RESULTS CALCULATED USING THE PROBIT METHOD <br />------------------------------------------ <br />i <br />~~ <br />_~ <br /> <br />