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Rasek [7]
3 years ago
13

Which of the following is an input device? (Select all that apply)

Computers and Technology
1 answer:
liq [111]3 years ago
4 0
A. keyboard and b. touch pad
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Name the sections of an instruction.
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Becca is working on a program that will store data. The program will need quick access to data and data persistence is not impor
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7 0
2 years ago
Fifty-three percent of U.S households have a personal computer. In a random sample of 250 households, what is the probability th
aleksley [76]

Answer:

The correct Answer is 0.0571

Explanation:

53% of U.S. households have a PCs.

So, P(Having personal computer) = p = 0.53

Sample size(n) = 250

np(1-p) = 250 * 0.53 * (1 - 0.53) = 62.275 > 10

So, we can just estimate binomial distribution to normal distribution

Mean of proportion(p) = 0.53

Standard error of proportion(SE) =  \sqrt{\frac{p(1-p)}{n} } = \sqrt{\frac{0.53(1-0.53)}{250} } = 0.0316

For x = 120, sample proportion(p) = \frac{x}{n} = \frac{120}{250} = 0.48

So, likelihood that fewer than 120 have a PC

= P(x < 120)

= P(  p^​  < 0.48 )

= P(z < \frac{0.48-0.53}{0.0316}​)      (z=\frac{p^-p}{SE}​)  

= P(z < -1.58)

= 0.0571      ( From normal table )

6 0
3 years ago
I need help 50 points and brainless if you answer
nata0808 [166]

Answer:

50

var X gets passed into the rectangle function, which I assume would set the x and y coordinates to what the var's have already been set to.

4 0
2 years ago
Read 2 more answers
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