Say is the average increase in shoe size for upper-class people compared to middle-class people: then the Wald test can be used to test whether is 0 (in which case social class has no association with shoe size) or non-zero (shoe size varies between social classes).
There are many different species of vultures and each has a different type of habitat. Turkey vultures are the most prominent of the New World vultures and can be found in Southern Canada, the Continental United States, Mexico, Central America and South America. These vultures live in small caves, beneath bushes, in hollowed out logs, and sometimes in abandoned structures.
Monkey Habitat and Distribution. The distribution for the Monkey covers may regions around the world. They tend to live in forest regions where they have lots of trees around them. Some of them live in the savannahs though or in the mountain regions. There are species of Monkeys that only live in trees. Others live in the trees as well as on land. Monkeys move around their home range a great deal. They travel daily to look for food.