Answer:
The correct answer is "$159 and $175".
Step-by-step explanation:
The give values are:
Mean,
= $167
Standard deviation,
= $40
Number of commuters,
n = 100
Now,
⇒ ![SE=\frac{\sigma}{\sqrt{n} }](https://tex.z-dn.net/?f=SE%3D%5Cfrac%7B%5Csigma%7D%7B%5Csqrt%7Bn%7D%20%7D)
On putting the given values, we get
⇒ ![=\frac{40}{\sqrt{100} }](https://tex.z-dn.net/?f=%3D%5Cfrac%7B40%7D%7B%5Csqrt%7B100%7D%20%7D)
⇒ ![=\frac{40}{10}](https://tex.z-dn.net/?f=%3D%5Cfrac%7B40%7D%7B10%7D)
⇒ ![=4](https://tex.z-dn.net/?f=%3D4)
By using the 2 SE rule of thumb, we get
= ![$(167 - 2\times 4)](https://tex.z-dn.net/?f=%24%28167%20-%202%5Ctimes%204%29)
= ![167-8](https://tex.z-dn.net/?f=167-8)
=
($)
Or,
= ![(167 + 2\times 4)](https://tex.z-dn.net/?f=%28167%20%2B%202%5Ctimes%204%29)
= ![167+8](https://tex.z-dn.net/?f=167%2B8)
=
($)
i.e,
$159 and $175
If my calculations are correct the correct answer is 4
To figure this out, you'd use the a^2+b^2=c^2 formula. Since you have your two sides, you want to find the value for c. So, you'd plug in two for a and b.
2^2+2^2=c^2
4+4=c^2
Add up the two fours to get 8 and square root it, and you get 2.828427124...
10:4,9:7 =
10:0,7 =
100:7 = 14,2857
Answer:
Janet has $21 and Marta has $17
Step-by-step explanation:
38-4 since Janet has 4 more dollars
34/2 since there are two people
17 but you still have to add the 4 to Janet since she has 4 more dollars