<PRE><B>Question 825378</B>
American adult has never been tested? Show your work. Hint: using the data in the two total rows, this would be calculated as p (NT) /( p (NT) + p (T)), where p is probability.
ge Group 
Tested 
Never Tested 
18-44 years ----------------
50,080 
56,405 
45-64 years----------------- 
23,768 
48,537 
65-74 years----------------- 
2,694 
15,162 
75 years and over----------- 
1,247 
14,663 
Total----------------------- 
77,789 
134,767
------
P(not tested) = 134,767/(134,767+77,789) = 0.634
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Cheers,
Stan H.
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