Question 1048572
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Hi  

Population of City | NE | SE | SW | NW
...   < 10,000     | 7% | 6% | 3% | 0%
.10,000 to 100,000 | 15%| 3% | 12%| 5%
.... > 100,000     | 20%| 4% | 1% | 24%
total	             42%  13%

P(>=10,000 |Eastern)  | reads "Given"
 P(A|B) = P(A and B)/P(B)
P(>=10,000 |Eastern) = P(>=10000 and Eastern)/P(Eastern) ={{{((18+24)/100) /((42+13)/100)}}} = 42/55 =  .764