In a certain geographical area, human birth weights have an average of 112 ounces with a standard deviation of 20 oz. Within this area is a community with high rates of unemployment, poverty, and hunger. A sample of 40 newborns from this community has an average weight of 102 ounces. What is the probability that random sampling and chance alone produced a sample with an average this low in the geographical area? a. .309 b. <.001 c. .050 d. .492 e. .691 f.>