deletions | additions       diff --git a/Introduction.tex b/Introduction.tex  index 6a15e04..95b8fdf 100644  --- a/Introduction.tex  +++ b/Introduction.tex 
...
\section{Introduction}  Paintball has beeng gaining significant ground in popularity in Canada, the US and around the world. In 2010, it was estimated that over 15 million people play paintball every year in the United States \cite{EmpirePaintball}. It is a sport in which players attempt to eliminate their opponents by tagging them with paintballs. The capsules filled with dye are fired through paintball markers powered by compressed air. In light of the popularity of the sport, this paper seeks to examine the relationship between shooting distance and shooting speed, and shooting distance and shooting accuracy.  In this experiment, participants were asked to fire five paintballs at a target at 10, 20 and 30 m, 30m,  and accuracy and shooting time was recorded. Accuracy was determined by measuring the distance from the centre of the paintball mark to the centre of the target. Speed was measured as the time between the first and last shot being fired. It is hypothesized that accuracy and shooting time will be comparable at 10, 20 and 30 m, 30m,  i.e. irrespective of distance. The contrary null hypothesis is that the greatest accuracy and fastest shooting time will be at 10 m from the target. The largest covariate that affects results is the experience of the participants. It is expected that the category of experienced participants will have a faster mean shooting time, and also have a greater mean accuracy. Experience is defined here as having used a paintball marker before. As such, the effect of experience on accuracy and shooting time shall be discussed later in this report.