Based on the mean and standard deviation calculated, would a resting heart rate of 80 be considered unusual? Why or why not? Consider any value 2 standard deviations above or 2 standard deviations below the mean unusual.

Of the 168 hours in a week as a full time student you should spend how many hours per week on school work?

Which of the following must happen in order for productivity to increase? a. production levels remain unchanged while inputs increase. b. production levels rise while inputs decrease. c. production levels fall while inputs increase.

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.