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 is 0.964

If the survey subjects <em>volunteered</em> to respond , then those with the strongest opinions are most likely respond. The survey sample is then not randomly selected, the survey may have a <em>response bias.</em>

Explanation:

Let P(at least one is more careful about personal information when using a public Wi-Fi hotspot) denote 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, then we have the equation

P(at least one is more careful about personal information when using a public Wi-Fi hotspot) = 1 - P(none of the selected users is more careful about personal information when using a public Wi-Fi hotspot)

If 67% of Internet users are more careful about personal information when using a public Wi-Fi, then 33% of them are not.

P(none of the selected users is more careful about personal information when using a public Wi-Fi hotspot) = $0.33^{3}$ ≈ 0.036

P(at least one is more careful about personal information when using a public Wi-Fi hotspot) = 1 - 0.036 = 0.964

4 0

3 years ago

Which type of operating system requires a keyboard in order to issue commands?

kicyunya [14]

Answer:

I said CLI.

Explanation:

''A command-line interface (CLI) processes commands to a computer program in the form of lines of text.''- Wikipedia

4 0

3 years ago

A clock is reading 10:27:54.0 (hr:min:sec) when it is discovered to be 4 seconds fast. Explain why it is undesirable to set it b

lara31 [8.8K]

Answer:

(a)Applications Time Stamp Events

(b)S=0.5(W- $T_{skew}$ )+ $T_{skew}$ , where $T_{skew}$ ≤W≤ $T_{skew}$ +8.

Explanation:

Some applications assume that clocks always advance, so they could timestamp events under this assumption.

In our case we have the wrong timed clock, say W and the hardware clock H which is supposed to advance at a perfect rate.

We proceed to construct a software clock such that after 8 seconds we can replace the wrong timed clock with the software clock in good conditions.

Let us denote the software clock with S.

Then, S=c(W- $T_{skew}$ )+ $T_{skew}$ where:

$T_{skew}$ =The current Time(10:27:54) and;

c is to be found.

We already know that S= $T_{skew}$ +4 when W= $T_{skew}$ +8,

So:

S=c(W- $T_{skew}$ )+ $T_{skew}$

$T_{skew}$ +4=c( $T_{skew}$ +8- $T_{skew}$ )+ $T_{skew}$

4=8c

c=0.5

We obtain the formula

S=0.5(W- $T_{skew}$ )+ $T_{skew}$ , where $T_{skew}$ ≤W≤ $T_{skew}$ +8.

4 0

3 years ago

What does Snap do?

Zinaida [17]

Answer:

Snap enables you to resize open windows,

Explanation:

Snap enables you to resize open windows, It is convenient when you want to see two windows simultaneously (side by side).

To do this, drag the desired window the left\right until the cursor reaches to the edge of the screen and then release the mouse.

The window will snap into place.

7 0

3 years ago