Any stimulus that when removed after a response strengthens the response is called a(n

Transplant operations have become routine. one common transplant operation is for kidneys. the most dangerous aspect of the procedure is the possibility that the body may reject the new organ. there are several new drugs available for such circumstances and the earlier the drug is administered, the higher the probability of averting rejection. the new england journal of medicine recently reported the development of a new urine test to detect early warning signs that the body is rejecting a transplanted kidney. however, like most other tests, the new test is not perfect. in fact, 20% of negative tests and 10% of positive tests prove to be incorrect. physicians know that in about 33% of kidney transplants the body tries to reject the organ. if the new test has a positive result (indicating early warning of rejection), what is the probability that the body is attempting to reject the kidney?

Two office workers in a medical facility must frequently access certain medical files to do their work. the first worker can reach the files easily by twisting around and reaching to retrieve them, while the second worker has get out of his chair and walk several minutes across the office each time he needs to get them. what is the best way to arrange the workplace to ensure good ergonomics? keep the files where they are and move the second worker close by so he can also twist around and reach them. keep the files where they are and move the first worker to a position close by where he no longer has to twist and reach to get the files. move the files so they are still within reach of the first worker but he no longer has to twist and reach to retrieve them. move the files so they are the same distance between the workers and ensure they can both retrieve them comfortably without having to twist and reach.

The maintenance of equilibrium while stationary or moving is known as: a) coordinationb) balancec) agility d) reaction time