The data in this dataset was compiled by a bike shop owner who is researching whether or not customers will purchase a bike. The bike shop owner wants to explore the variables related to bike purchases in order to figure out how to advertise the bike shop. The bike shop owner surveyed a sample of 1000 customers at bike shops in different parts of the world using online surveys to get this information about bike customers. Customers found the survey through links from Facebook, Instagram, and on the bike shop website. Is the statistics professor conducting an observational study or an experiment? Explain your reasoning