    ‘Sentence t if the data from a series of tests  performed with the same toxicant, toxicant  concentrations, and test species,  analyzed hypothesis tests,  could onty assessed by a@ qualitati  comparison “oP the NOEC-LOEC frervals,  with the understanding that a  precision would be attained if all tesi  yielded the same NOEC-LOEC interval.                         Sentence 2: They needed various data to tes!  for toxicants.