Based on a poll, 69% of Internet users are more careful about randomly selected

Question

Based on a poll, 69% of Internet users are more careful about 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 when using a public Wi-Fi hotspot. What is the probability that among three volunteered to r The probability that at least one of them is careful about personal information is Round to three decimal places as needed.) How is the result affected by the additional information that the survey subjects volunteered to respond? o A. It is very possible that the result is not valid because the sample may not be representative of the people who use public WFL O B. O C. The result should not be impacted by this because there is no reason to lie when responding O D. The result should not be impacted by this because volunteers are lkely to have the most relevant responses It is very possible that the result is not valid because not everyone uses public Wi-Fi

Explanation / Answer

a) Here we are given that:

P( careful ) = 0.69

Therefore probability that at least one is careful is computed as:

= 1- Probability that no one is careful

= 1 - (1 - 0.69)3

= 0.9702

Therefore 0.970 is the required probability here. ( rounded to three decimal places )

Next as we are looking for people who use public wifi, therefore this test may not be valid as all people dont use it. Therefore B is the correct answer here.

c)

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