Consider a bag with 80 Green, 71 Orange, 66 Purple, and 90 Red Skittles. We wish to determine if the colors are evenly distributed. The null hypothesis is that the observed and expected amounts are...

Consider a bag with 80 Green, 71 Orange, 66 Purple, and 90 Red Skittles.  We wish to determine if the colors are evenly distributed.  The null hypothesis is that the observed and expected amounts are equal, i.e. the colors are evenly distributed, at α = .01.  What are the test statistic, critical value and result, respectively?