SOLUTION: A new virus is released on the internet: the adminstrator of a department's Local Area Network (LAN) is given five minutes by a manager to estimate the impact. The adminstrator sa

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Question 203297: A new virus is released on the internet: the adminstrator of a department's Local Area Network (LAN) is given five minutes by a manager to estimate the impact. The adminstrator samples 12 of the PCs connected to the LAN and finds that 7 are infected. Use proportion to estimate the number of infected PCs if there are a total of 216 PCs connected to the LAN.
Answer by Earlsdon(6294) About Me  (Show Source):
You can put this solution on YOUR website!
You can set up the proportion as follows:
(7 PCs infected)/(12 PCs connected) = (x PCs infected)/(216 PCs connected) or...
7%2F12+=+x%2F216 Multiply both sides by 216.
x+=+7%28216%29%2F12 Evaluate.
highlight%28x+=+126%29 This is the estimated number of infected PCs.