Mia is finally able to upgrade her cell phone. the one she wants costs 220 but she is able to get it for 60% off. she has a coupon for an additional 10% off. how much does she pay for her phone?

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