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 29, 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

In this context, the probability that the internet users are more careful about the personal information when using public Wi-Fi hotspot is 0.67 and the probability that the internet users are not careful about the personal information when using public Wi-Fi hotspot is, 0.33 (=1-0.67). let A denote that at least one of the internet users are more careful about personal information when using public hotspot. Also, Also, Ā = none of the internet users are more careful about personal information when using public hotspot.

Probability for Ā:

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Step 2

Complementary probability:

The pro...

Statistics homework question answer, step 2, image 1
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