It has been estimated that the oil sands in Alberta Canada contain 2 trillion barrels of oil. However, recovering the oil damages the environment. A survey of Canadians and Americans was asked, what is more important to you with regard to the oil-sands, environmental concerns (1), or the potential as a secure non-foreign supply of oil to North America (2)? Do these data allow you to conclude that Canadians and Americans differ in their responses to this question?