V = l • w • h
V = 2 • 2 • 2 or V = 2^3
V = 8
Answer:
Step-by-step explanation:
Given that data from students doing a lab exercise are as follows:
33,190 31,860 32,590 26,520 33,280 32,320 33,020 32,030 30,460 32,700 23,040 30,930 32,720 33,650 32,340 24,050 30,170 31,300 28,730 31,920
Mean = 30841
Since normal and also sigma is known, std error
=![\frac{\sigma}{\sqrt{n} } \\=\frac{3000}{\sqrt{40} } \\=474.34](https://tex.z-dn.net/?f=%5Cfrac%7B%5Csigma%7D%7B%5Csqrt%7Bn%7D%20%7D%20%5C%5C%3D%5Cfrac%7B3000%7D%7B%5Csqrt%7B40%7D%20%7D%20%5C%5C%3D474.34)
For95% margin of error = ±1.96(474.34) =±929.71
Hence 95% conf interval = 30841±929.71
=(29911.29, 31770.71)
The answer to your question is 30
Answer:
b.
Step-by-step explanation:
The graph can be divided into 4 regions.
Region 1 is for ![x\in (-\infty,-1)](https://tex.z-dn.net/?f=x%5Cin%20%28-%5Cinfty%2C-1%29)
Region 2 is for ![x\in (-1,0)](https://tex.z-dn.net/?f=x%5Cin%20%28-1%2C0%29)
Region 3 is for ![x\in (0,1)](https://tex.z-dn.net/?f=x%5Cin%20%280%2C1%29)
Region 4 is for ![x\in (1,\infty)](https://tex.z-dn.net/?f=x%5Cin%20%281%2C%5Cinfty%29)
So, for the region 1, the values of
goes on decreasing with increasing
. Therefore, the function is decreasing in the interval
.
Now, for the region 2, the values of
increases with increasing
. So, the function is increasing in the interval
.
For the region 3, the the values of
goes on decreasing with increasing
. Therefore, the function is decreasing in the interval
.
Now, for the region 4, the values of
increases with increasing
. So, the function is increasing in the interval
.
Therefore, regions 2 and 4 are the regions when the function is increasing.
Hence, the correct option is b.