The governor of California is worried about the increasing number of traffic accidents in her state. She decides a new policy is needed to solve the problem. She has identified the , so her next step is to form to study the accidents. This group recommends a solution: lowering the speed limit in the areas where the accidents are most common. The legislature passes such a law and sets up . The Department of Transportation and local law enforcement are given the and tools to enforce the new speed limits.

Before tuberculosis was understood to be a communicable disease, and before the discovery of antibiotics to treat it, a major outbreak could kill or cripple a significant portion of a nation’s labor force. how would such an event affect the economy? illustrate the effect by dragging to shift either the aggregate demand curve or the long-run aggregate supply curve.

Dr. redbull conducts a study to determine whether her new energy drink children perform better on spelling tests. she randomly assigns children to one of two groups: group 1 receives her energy drink and group 2 receives water. she then gives both groups a spelling test and compares the results. which of the following is true about this study? a. group 1 is the dependent variable and group 2 is the independent variable. b. this is a correlational study. c. group 2 is the experimental group. d. the independent variable is the type of drink the children receive.

Use statistics below to create a graph titled businesses in the united states, 1997-2003. use information from your graph and from figure 3.1 on page 71 to write a generalization about businesses in america free enterprise system.