Question

There are 500 computers in an office building. The IT manager randomly chose 40 computers to be inspected for viruses. Of those inspected, 6 computers had viruses.

What is the best estimate of the percent of computers in the building that have viruses?

Answer 1

15 %

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Answer 2

6 out of 40 had viruses.

6 out of 40 = 6/40 = 3/20 = 0.15 = 15%

In the 40-computer sample, 15% of the computers have viruses.

Answer: 15%