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kobusy [5.1K]
3 years ago
8

g Based on a​ poll, 61​% 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 nothing. ​(Round to three decimal places as​ needed.) How is the result affected by the additional information that the survey subjects volunteered to​ respond? A. It is very possible that the result is not valid because not everyone uses public​ Wi-Fi. B. It is very possible that the result is not valid because the sample may not be representative of the people who use public​ Wi-Fi. C. The result should not be impacted by this because there is no reason to lie when responding. D. The result should not be impacted by this because volunteers are likely to have the most relevant responses.
Mathematics
1 answer:
notka56 [123]3 years ago
3 0

Answer: P (atleast one is careful) is

1 - 0.012 =0.988

B) It is very possible that the result is not valid because the sample may not be representative of the people who use public​ Wi-Fi

Step-by-step explanation:

P(not careful) =1 - 0.67 = 0.33

P (4 all not careful) = (0.33)^4 =0.012

P (atleast one is careful) = 1 - 0.012 =0.988

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3 years ago
If k is a positive integer and n = k(k + 7), is n divisible by 6 ? (1) k is odd. (2) When k is divided by 3, the remainder is 2.
olganol [36]

Answer:

1.) Yes

2.) Yes

Step-by-step explanation:

Given that

n = k(k + 7)

If k is a positive integer and n = k(k + 7), is n divisible by 6 ?

(1) k is odd. Yes.

Let assume that k = 3

Then, n = 3(3 + 7)

n = 3 × 10

n = 30.

30 is divisible by 6.

(2) When k is divided by 3, the remainder is 2. That is,

Let k = 5

Then,

5/3 = 1 remainder 2

Substitute k into the equation

n = k(k + 7)

n = 5(5 + 7)

n = 5 × 12

n = 60

And 60 is divisible by 6.

Therefore, the answer to both questions is Yes.

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3 years ago
What does rigid mean? (geometry wise)
Ivan

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Step-by-step explanation:

4 0
3 years ago
The maximum weight for a truck on the new York state thruway is 40 tons . How many pounds is this
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Answer:

A dilation with a scale factor less than 1 and then a reflection.

Step-by-step explanation:

A dilation with a scale factor less than 1 and then a reflection is the composition of similarity transformations maps polygon ABCD to polygon A'B'C'D.

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Read 2 more answers
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