<prompt> Translate the following text to EnglishWakati vipimo vya nadharia hutumiwa kuchambua data ya mtihani wa sumu, haiwezekani kuelezea usahihi katika suala la takwimu zinazotumiwa kwa kawaida.  <response>: When hypothesis tests are used to analyze toxicity test data, it is not possible to express precision in terms of a commonly used statistic. 