Question

Part I-Additional Resources Allowed A study conducted in 2014 looked into the impact of violent video games on aggressive behavior. Researchers randomly assigned 101 volunteers from a UK University to either play LittleBigPlanet 2, a neutral video game, or Call of Duty: Modern Warfare, a violent video game. All participants played the game assigned to them for 30 minutes. Afterwards, researchers asked the participant to prepare an amount of chili sauce for a taste tester Participants were told the taste tester 'couldn't stand hot chili sauce', and the chili sauce provided was labeled with three out of three chilies for hotness. Researchers measured the amount of chili sauce, in grams, the participant prepared for the taste tester with more chili sauce indicating the participant was more aggressive at the time. The research conjecture was that violent video games would make participants more aggressive. The data is available on D2L under Assignment 6, and note the order of subtraction used will be neutral - violent. 1. Select one answer in each set of brackets to best describe the variables collected Explanatoryj variable and it is (Quantitative Categorical Response Type of game (neutral or violent) is the Explanatoryj variable and it is Quantitative Categorical Response Amount of chili sauce prepared (in grams) is the 2. Is this an observational study or an experiment? Explain how you know, in the context of the problem. 3. Define the parameter of interest in words and notation. Select on<e A. B. Tn- mythe difference in true proportion of people displaying aggressive behavior after playing the C. Xn- Xv- the difference in mean amount of chili sauce prepared between participants playing the D. Hn- Hv -the difference in true mean amount of chili sauce prepared between people playing the μη-μ,-the effect of playing violent video games on aggression. neutral video game compared to the violent video game neutral video game compared to the violent video game in the sample neutral video game compared to the violent video game 4. [2 pts] Write the null hypothesis in words in the context of this problem.

Answer 1

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