Halo is a popular science fiction video game. It can be played on different levels. Statistics students at Hope College wanted to determine whether or not the level on which the game was played affects how well a person plays. Data were collected from 90 different games of Halo, 30 from each of the three different levels. Consider the number of kills to be the response variable. The data are given in HaloKills.
a. State, in words, the null and alternative hypotheses to test whether number of kills differs by group level.
b. Describe in words the parameter(s) of interest and assign symbol(s) to the parameter(s).
c. State, in symbols, the null and alternative hypotheses.
d. Pretend for the moment that each of the 90 games had been played by a different person. Explain why this would matter.
e. Using the Multiple Means applet find and report the value of a statistic that summarizes the discrepancies between the three levels. What is this statistic called?
f. Using the Multiple Means applet implement a simulation-based approach to test the hypotheses stated in part (a). Be sure to report a p-value.

g. Based on the p-value reported in part (f), state an appropriate conclusion in the context of the study. Be sure to comment on statistical significance, causation, and generalization along with how you are making your decision.