On April 1, 2010, the Bureau of the Census in the United States attempted to count every U.S. resident. Suppose that the counts in the table given below are obtained for four counties in one region.

a. If one person is selected at random from this region, what is the estimated probability that the selected person is from Ventura County?

b. If one person is selected at random from Ventura County, what is the estimated probability that the selected person is Hispanic?

c. If one Hispanic person is selected at random from this region, what is the estimated probability that the selected individual is from Ventura County?

d. If one person is selected at random from this region, what is the estimated probability that the selected person is an Asian from San Luis Obispo County?

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Race/Ethnicity Black 24,000 Caucasian American Indian 4,000 3,000 5,000 County Monterey San Luis Obispo Santa Barbara 163,000 180,000 230,000 430,000 Hispanic 139,000 37,000 Asian 39,000 9,000 24,000 121,000 231,000 7,000 12,000 18,000 Ventura 50,000 7,000