Wilbur runs 3.2 km every morning. how many feet are in 3.2 km, given that 1 mile = 1.609 km and 1 mile = 5,280 feet?

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