Based on a poll, 64% of Internet users are more careful about personal information when using a public Wi-Fi hotspot. What is the probability that
among three 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.
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