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Western Fuels 011 Cd Acute March 2009 <br />Program run on 03-20-2009 at 09:08:28 <br />RESULTS CALCULATED USING THE BINOMINAL METHOD <br />-------------------------- <br />CUNC. NUMBER NUMBER PERCENT ------------------ <br />BINOMIAL <br />EXPOSED DEAD DEAD <br />------ PROB.(PERCENT) <br />----------------------- <br />100 20 1 5.00 ------------------------- <br />0.0020 <br />75 20 2 10.00 0.0201 <br />50 20 1 5.00 0.0020 <br />25 20 2 10.00 0.0201 <br />12.5 20 1 5.00 0.0020 <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 D ATA <br />IS QUESTIONABLE BECAUSE A CONCENTRATION-EFFECT RELATIONS HIP <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 />RESULTS CALCULATED USING THE PROBIT METHOD <br />--------------------------------------------------------