Answer:
1 11/12
Step-by-step explanation:
convert to common denominators.
1 1/6 = 7/6 = 14/12
3/4 = 9/12
14+9=23
23/12
1 11/12
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hope it helps
Answer:
it is 40*
Step-by-step explanation:
because you know 1 and 3 is 20*
so that would make 2 and 4 the same
witch is 40*
Given:
Standard error = 4
Population standard deviation = 16
To find:
The value of n.
Solution:
The formula of standard error is:
![SE=\dfrac{\sigma}{\sqrt{n}}](https://tex.z-dn.net/?f=SE%3D%5Cdfrac%7B%5Csigma%7D%7B%5Csqrt%7Bn%7D%7D)
Where, SE is standard error ,
is population standard deviation and n is the total number of elements.
Substituting
in the above formula, we get
![4=\dfrac{16}{\sqrt{n}}](https://tex.z-dn.net/?f=4%3D%5Cdfrac%7B16%7D%7B%5Csqrt%7Bn%7D%7D)
![\sqrt{n}=\dfrac{16}{4}](https://tex.z-dn.net/?f=%5Csqrt%7Bn%7D%3D%5Cdfrac%7B16%7D%7B4%7D)
![\sqrt{n}=4](https://tex.z-dn.net/?f=%5Csqrt%7Bn%7D%3D4)
Taking square on both sides, we get
![n=4^2](https://tex.z-dn.net/?f=n%3D4%5E2)
![n=16](https://tex.z-dn.net/?f=n%3D16)
Therefore, the value of n is 16.