Mars Inc. claims that they produce M&Ms with the following distributions:

Brown	30%	Red	20%	Yellow	20%
Orange	10%	Green	10%	Blue	10%

A bag of M&Ms was randomly selected from the grocery store shelf, and the color counts were:

Brown	25	Red	24	Yellow	19
Orange	15	Green	15	Blue	15

Using the ² goodness of fit test to determine if the proportion of M&Ms is what is claimed, what is the test statistic?