At a certain high school, the distribution of backpack weight is approximately normal with mean 19. 7 pounds and standard deviation 3. 1 pounds. A random sample of 5 backpacks will be selected, and the weight, in pounds, of each backpack will be recorded.

Why do you think electric energy for households is generally supplied by power plants instead of by an electric generator at home.

The phrase references available upon request should appear at the __ of your résumé? a. back b. top c. middle d. bottom

The graph shows the populations of two species in a particular region over two decades. based on the graph, what can you conclude about the relationship between the two species? a. the two species have a parasitic relationship. b. the two species are mutualistic in nature. c. the two species exhibit commensalism. d. the two species have a prey-predator relationship. e. the two species have a familial relationship.