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C.dubia-MidContinent-Influent-6/25/96 <br /> Program run on 07-01-1996 at 11:15:17 <br /> RESULTS CALCULATED USING THE BINOMINAL METHOD <br /> -------------------------------------------------------------------------------- <br /> CONC. NUMBER NUMBER PERCENT BINOMIAL <br /> EXPOSED DEAD DEAD PROB. (PERCENT) <br /> -------------------------------------------------------------------------------- <br /> 100 20 12 60.00 25. 1722 <br /> 75 20 1 5.00 0.0020 <br /> 50 20 0 0.00 LESS THAN 0.001 <br /> 25 20 0 0.00 LESS THAN 0.001 <br /> 12.5 20 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 75 <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 /> AN APPROXIMATE LC50 OF 95.60784 IS OBTAINED BY <br /> NONLINEAR INTERPOLATION BETWEEN 75 AND 100 <br /> RESULTS CALCULATED USING THE MOVING AVERAGE METHOD <br /> -------------------------------------------------------------------------------- <br /> SPAN G LC50 95 PERCENT CONFIDENCE LIMITS <br /> -------------------------------------------------------------------------------- <br /> 1 0.248 95.608 88.893 109.769 <br /> AN LC50 CALCULATED USING THE MOVING AVERAGE METHOD MAY NOT <br /> BE A VERY GOOD ESTIMATE IF THE SPAN IS MUCH LESS THAN THE <br /> NUMBER OF CONCENTRATIONS. <br /> RESULTS CALCULATED USING THE PROBIT METHOD <br /> -------------------------------------------------------------------------------- <br /> COMMERCIAL TESTING & ENGINEERING CO. <br /> Origi 'AL <br /> Original Watermarked For Your Protection <br />