A certain company wishes to know the favorite brand of pet food of shoppers at their store. They send a pollster who surveys 150 random shoppers at the store on a given day. what is the population? what is the sample? O Sample: All customers at the store Population:All customers at the store who buy pet food Sample: Customers who took the survey at the store Population: All customers at the store Sample:All dog food customers Population: The dog food purchasing customers O Sample: The dogs who eat the food Populations: All good dogs