Wi-Fi Based on a poll conducted through the e-edition of  USA Today , 67% 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?

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Asked Dec 21, 2019
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Wi-Fi Based on a poll conducted through the e-edition of  USA Today , 67% 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?

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Expert Answer

Step 1

Definition:

P (A and B) = P (A).P (B)

P (Ā) = 1- P (A)

Step 2

Given that,

67% of internet users are more careful using public hotspot.

Step 3

Hence,

Probability of a person not caref...

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P(not careful) = 1-0.67 = 0.33

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