Answer:
20
Step-by-step explanation:
The question states that the sample size is 16 and standard deviation of sampling distribution of sample mean also known as standard error is 5. This information can be written as
σxbar=standard error=5 ,n=sample size=16.
We have to find population standard deviation σ.
We know that
![Standard error=\frac{population standard deviation}{\sqrt{n} }](https://tex.z-dn.net/?f=Standard%20error%3D%5Cfrac%7Bpopulation%20standard%20deviation%7D%7B%5Csqrt%7Bn%7D%20%7D)
![population standard deviation=\sqrt{n} *(standard erorr)](https://tex.z-dn.net/?f=population%20standard%20deviation%3D%5Csqrt%7Bn%7D%20%2A%28standard%20erorr%29)
![\sqrt{n} =\sqrt{16} =4](https://tex.z-dn.net/?f=%5Csqrt%7Bn%7D%20%3D%5Csqrt%7B16%7D%20%3D4)
<em>Population standard deviation=</em>σ=4*5=20
The answer is a
this is because the shape increased in size by a factor of 2
5 0/1 think that it might help
The "solution" has the form of a graph. First, graph the line y=6 using a dashed (not solid) line. Shade the plane below this line.
Next, graph y = x-3, using a dashed line. This line has a y-intercept of (0,-3) and a slope of 1. Shade the area above this line.
The solution set is the area that has been shaded twice, once for each of the 2 given inequalities.
Answer:
15
Step-by-step explanation:
Cross multiply
3 times 20 = 60
4 times x = 4x
now your left with
60= 4x
divide 4 on both sides
15 = x