Im having a hard time understanding the hypothesis testing .

Im having a hard time understanding the hypothesis testing. I went on course hero to find clearer examples and I couldn't find any to help me learn this properly with step by step clear instructions. As you can see down below, the practice question ask I tried to understand and I would like to learn how

Think of an application where you can use hypothesis testing to test a premises. Use .05 for your alpha and give the scenario. Set up the problem, solve it and state the conclusions.