I believe that 50% of my friends that are
drummers suffer from tinnitus. I asked 20 friends of mine who are drummers on social media if they suffered from tinnitus in their ears from playing the drums. Of the 20 friends, 14 of them said yes, they did suffer from ringing in the ears. I will test this hypothesis at the 0.05 level. I need to propose a hypothesis test problem for this parameter.