Astudy claims that aver 25% ofthcse who suer from osteoarthritis receive measurable relief from an ingredient produced by a particular species at mussel To test this claim, the mussel extract is tu be given t0 a group of T csleuanhrilic patients lf2 or more of the patients receive relief, we shall not reject the null hypothesis that p : 0 25; otherwrse we conclude that p