After a long day of being nice to impolite customers at the restaurant where she works, Marisa comes home and unwinds by playing several hours of a violent video game. When she is finished playing, she feels a little better about all of the times she had to endure the rudeness of her customers and couldn't say what she was thinking. A psychologist would say that she enjoys the game because it acts as a . A. catharsis B. physiological arousal C. maladaptive emotion D. verbal outburst

The roman empire fell around the 5th century, and as islam spread in the 7th century, trade between europe and china slowed. chinese traders were blocked from westward expansion into europe when the chinese army was defeated by muslim fighters in the area known as syr darya. the trade routes, known as the silk road, fell into disuse, and trade between the far east and europe nearly stopped. it wasn't until the 13th century when the mongols invaded and controlled central asia and large parts of the middle east that extensive trade along these routes was opened again. based upon the paragraph above and your knowledge of the mongols, which of the following statements is correct? a. the mongols unified regions along the silk road, allowing for safe transport of goods. b. muslims controlled busy trade routes into china from the 5th to the 7th centuries. c. without access to european markets, the chinese were unable to obtain raw materials. d. the mongols replaced the roman empire as the dominant force in western europe.

The probability of committing a type i error is equal to which of the following? significance level, α type i error type ii error p-value alternative hypothesis

What information does a survey provide? a. an accurate description of the population surveyed b. whether there is a predictive relationship between two variables? c. whether there is a cause-and-effect relationship between two variables d. none