Last year, a Pepsi cans factory had 21% of the market. In order to increase their percentage of holding, the factory has announced a new Pepsi cans. A sample of 400 people contributed in the test and 100 noted that they like the new Pepsi cans. We are concerned in investigating if more than 21% of the population will like the new Pepsi cans O a Reject HO b. Do not reject HO