According to the U. S. Census Bureau, the total 2008 U.S. population was 303,824,640. The chart below summarizes the 2008 population for five U.S. States.
State 2008 Population
Missouri 5,911,605
Pennsylvania 12,448,279
Tennessee 6,214,888
Utah 2,736,424
Washington 6,549,224
What is the probability that a randomly selected U.S. resident did not live in Washington? Show step by step work. Round solution to the nearest thousandth

Question

According to the U. S. Census Bureau, the total 2008 U.S. population was 303,824,640. The chart below summarizes the 2008 population for five U.S. States.
State	     2008             Population
Missouri	              5,911,605
Pennsylvania	              12,448,279
Tennessee	              6,214,888
Utah	                           2,736,424
Washington	              6,549,224
What is the probability that a randomly selected U.S. resident did not live in Washington? Show step by step work. Round solution to the nearest thousandth

anonymous · Answer

It looks hard because of the big numbers but actually I think it is pretty easy. 
303,824,640 is the total population
6,549,224 this is Washington 
303,824,640-6,549,224 =297275416  (this is the US population that dont live in Wash)
A probability is always the good outcomes/all outcomes. 
So the answer is 297275416 /303,824,640= 0.978444