1. Below are the number of acts of graffiti that occur on walls painted white, painted blue, or covered with chalkboard. We want to know if there is a preference for graffiti based on colour of walls. Observed Frequencies White Blue Chalk 8 5 17 =30 a) State your statistical hypothesis: Observed dota not equal to expected data b) Run the appropriate statistical test statistic. Report the degrees of freedom, the critical value at a = 0.01. State your statistical decision and what it means