A company claims that 80% of its customers are under 30. You suspect it is less than this. You take a random sample of 200 customers to test this and find out that 75% of your sample are under 30. What is the alternative hypothesis here
What we are trying to show is the alternative hypothesis. Here, we are trying to show that what the company claims is wrong; less than 80% of the company's customers are under 30.