SOLUTION: Based on a poll, 70% of Internet users are more careful about personal information when using a public Wi-Fi hotspot. What is the probability that among four randomly sele
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-> SOLUTION: Based on a poll, 70% of Internet users are more careful about personal information when using a public Wi-Fi hotspot. What is the probability that among four randomly sele
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Question 1181159: Based on a poll, 70% of Internet users are more careful about personal information when using a public Wi-Fi hotspot. What is the probability that among four randomly selected Internet users, at least one is more careful about personal information when using a public Wi-Fi hotspot? How is the result affected by the additional information that the survey subjects volunteered to respond?
The probability that at least one of them is careful about personal information is ____.
(Round to three decimal places as needed.) Answer by Boreal(15235) (Show Source):
You can put this solution on YOUR website! At least one is the same as saying 1-none.
That is 1-0.3^5=0.99757 or 0.998
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If they volunteered for the survey, it is likely that they would be likely to say they are more careful about personal information.
