A car company is testing a new type of tire. They want to determine the stopping distance if the car has anti-lock brakes or not. They test out tires on five randomly selected cars from the lot. They want to know if the stopping distance is significantly different under the two conditions. What is the factor?

Which two of the following are benefits of consumer programs

Acoase solution to a problem of externality ensures that a socially efficient outcome is to

Joe pays ann to mow his lawn and ann mows vanna's lawn by mistake. vanna peers out her window and sees ann mowing, yet says nothing to ann about her mistake since vanna needs to have her lawn mowed. when ann approaches vanna for payment, vanna refuses, arguing that she never asked ann to mow her lawn. under these circumstances, ann can recover payment from vanna under: