A pharmaceutical company is testing a newly  developed therapy. If the therapy lowers the blood  pressure of a patient by more than 10 mm, it is  deemed effective. 16  What are the natural hypotheses ...

A pharmaceutical company is testing a newly  developed therapy. If the therapy lowers the blood  pressure of a patient by more than 10 mm, it is  deemed effective.¹⁶ What are the natural hypotheses  to test in a clinical study of this new therapy?

A chemical firm has been accused of polluting the  local river system. State laws require the accuser to  prove the polluting by a statistical analysis of water  samples. Is the chemical firm worried about a Type I  or a Type II error?