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.
These forest areas can contain such trees as Oaks, Pines, and hickories. However turkeys have been known to survive on land that is sparsely forested. Wild turkeys roost in trees at night, normally pine trees or large mature oaks these roosts offer protection from predators and also severe weather conditions.They will flee to the roost or available trees at the first sign of danger. The turkey s habitat condition is greatly linked to the density of turkey population.hese forest areas can contain such trees as Oaks, Pines, and hickories. However turkeys have been known to survive on land that is sparsely forested. Wild turkeys roost in trees at night, normally pine trees or large mature oaks these roosts offer protection from predators and also severe weather conditions.