The owner of a mail-order catalog would like to compare her sales with the geographic distribution of the US population. According to the U.S. Bureau of the Census, 21% of the population lives in the Northeast, 24% in the Midwest, 35% in the South, and 20% in the West. At the .01 significance level, does the distribution of the orders reflect (fit) the distribution of the US population?

Regional Sample proportion Region Observed Expected 0.21 Northeast 68 0.24 Midwest 104 0.35 South 155 0.2 West 73 Total 400