In 2001, the most populous countries were China and India. In that year, China’s population exceeded India’s by 260 million. Combined, the two countries had a population of 2310 million. Determine the 2001 population for China and India.

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