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Advocard [28]
3 years ago
9

(x^4+x^3+x+1)/(x^4-x^3+2x^2-x+1) Rút gọn biểu thức

Mathematics
1 answer:
nignag [31]3 years ago
4 0
Nananannsnznznnsnsnznsjjsjsjsjsjsjjsjsjsjsjsjs
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A population has a standard deviation of 5.5. What is the standard error of the sampling distribution if the sample size is 81?
VladimirAG [237]

Answer:

\sigma = 5.5

And we have a sample size of n =81. We want to estimate the standard error of the sampling distribution \bar X and for this case we know that the distribution is given by:

\bar X \sim N(\mu ,\frac{\sigma}{\sqrt{n}})

And the standard error would be:

\sigma_{\bar x}= \frac{\sigma}{\sqrt{n}}

And replacing we got:

\sigma_{\bar x}=\frac{5.5}{\sqrt{81}}= 0.611

Step-by-step explanation:

For this case we know the population deviation given by:

\sigma = 5.5

And we have a sample size of n =81. We want to estimate the standard error of the sampling distribution \bar X and for this case we know that the distribution is given by:

\bar X \sim N(\mu ,\frac{\sigma}{\sqrt{n}})

And the standard error would be:

\sigma_{\bar x}= \frac{\sigma}{\sqrt{n}}

And replacing we got:

\sigma_{\bar x}=\frac{5.5}{\sqrt{81}}= 0.611

4 0
3 years ago
Please answer this and I’ll make ya
Fynjy0 [20]
It’s definitely A
Ex: f(x)=8x+2
f(x)=8(-4)+2
f(x)=-32+2
f(x)=-30
3 0
4 years ago
How do I find the missing value
liberstina [14]
Okay. Since the "y" value and 82* are on the same straight line, their values will always add up to make a sum of 180. So if you subtract 82 from 180 you get 98*. So your "y" value is equal to 98*.

Now, all of the degree values added together should give you a sum of 360, so now we must add the values we know, in order to find the "x" value. So, 112*+82*+98*=292. Now we know that the difference of 360 and 292 will give us the x value. So finally, 360-292=68. So your "x" value is equal to 68.

y=98
x=68
6 0
4 years ago
Homework help due today!!
SSSSS [86.1K]

Answer: D

Step-by-step explanation:

It's not iscolses or equal length

3 0
3 years ago
How much cash did Victoria receive?<br><br> A// 1069.89<br> B// 521.24<br> C// 150.00<br> D// 0.00
telo118 [61]

Answer:

C// 150.00

Step-by-step explanation:

The line stating Less cash Received is how much cash she gets back

She will get back 150.00

7 0
3 years ago
Read 2 more answers
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