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1 <br /> p.promelas-Mountain Coal Co.-1/4/01 <br />' Program run on O1-OS-2001 at 14:30:41 <br /> RESULTS CALCULATED USING THE BINOMINAL METHOD <br /> -------- <br />CONC. ----------------- <br />NUMBER ------------- <br />NUMBER ----------- <br />PERCENT <br /> EXPOSED DEAD <br />-- <br />- DEAD <br />- <br />-- <br />-- <br /> -------- <br />100 ----------------- <br />40 -------- <br />-- <br />2 --- <br />--- <br />5.00 <br />' 75 40 0 0.00 <br /> 50 40 0 0.00 <br />' 25 <br />9 <br />1 40 <br />40 0 <br />0 0.00 <br />0.00 <br /> . <br />-------------------- <br />BINOMIAL <br />PROB.(PERCENT) <br />-------------------- <br />LESS THAN 0.001 <br />LESS THAN 0.001 <br />LESS THAN 0.001 <br />LESS THAN 0.001 <br />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 THIS 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 WITH 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 />' WHEN THERE ARE LESS THAN TWO DIFFERENT CONCENTRATIONS AT <br />WHICH THE PERCENT DEAD IS BETWEEN 0 AND 100, THE PROBIT <br />METHOD CANNOT GIVE ANY STATISTICALLY SOUND RESULTS. <br />~ COMPARE RESULTS WITH ORIGINAL DATA TO SEE IF THEY ARE <br />REASONABLE. <br />GOMMEq GIALTESTING 8 EN GIN EEgING CO. <br /> <br />F-466 w^~ <br />Original Watermarketl For Your Protectlon <br />