Explain what happens to the graph of y = xn, where n is an even positive integer, as n increases. Describe changes for x between – 1 and 1 and for x greater than 1 or less than – 1.

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