The Alexander family is selecting a furniture set. A furniture set has a bed, a desk and a dresser. There are 2 beds, 4 desks, and 1 dresser to select from. How many different furniture sets could they select?

Aresearch study is done to find the average age of all u.s. factory workers. the researchers asked every factory worker in ohio what their birth year is. this research is an example of a census survey convenience sample simple random sample