an urban economist is curious if the distribution in where oregon residents live is different today than it was in 1990. she observes that today there are approximately 3,109 thousand residents in nw oregon, 902 thousand residents in sw oregon, 244 thousand in central oregon, and 102 thousand in eastern oregon. she knows that in 1990 the breakdown was as follows: 72.7% nw oregon, 20.7% sw oregon, 4.8% central oregon, and 2.8% eastern oregon. can she conclude that the distribution in residence is different today at a 0.05 level of significance?