Now consider the same data (political affiliation of US Senators across geographical regions) for the year 2017. Only now the data is expressed in percentages in a two-way (joint distribution) table.
2017 Region Democrats Republicans Independents Total
Southeast 0.09 0.18 0.01 0.28
Southwest 0.02 0.04 0 0.06
West 0.09 0.09 0 0.18
Midwest 0.1 0.11 0.01 0.22
Northeast 0.14 0.08 0 0.22
Pacific 0.03 0 0.01 0.04
Total 0.47 0.50 0.03 1
Determine the probability a randomly selected Republican senator is from the West (meaning either from W or MidW)