Answer:
A = 8, B = 6, C = 4 , D = 7
Top = 29
Side = 20
Step-by-step explanation:
Last row : A + A + A + A = 32 ==> A = 8
First row : D + A + D + D = 3D + 8 = 29
3D = 21 ==> D = 7
Second row : B + D + A + B = 27 ==> 2B + 7 + 8 = 27
2B = 12 ==> B = 6
Third column : D + A + C + A = 27
7 + 8 + C + 8 = 27 ==> C = 4
The y value should be -128
Alright,
10 x 2 = 20
2 x 3.7 = 7.4
7.4 + 20 = 27.4
When you would round this number, it would go to around 27.
Answer:
figure it out by paying attention
Step-by-step explanation:
figure it out by paying attention
Answer:
5
Step-by-step explanation:
The Central Limit Theorem estabilishes that, for a normally distributed random variable X, with mean
and standard deviation
, the sampling distribution of the sample means with size n can be approximated to a normal distribution with mean
and standard deviation
.
For a skewed variable, the Central Limit Theorem can also be applied, as long as n is at least 30.
In this problem, we have that:
![\mu = 80, \sigma = 20](https://tex.z-dn.net/?f=%5Cmu%20%3D%2080%2C%20%5Csigma%20%3D%2020)
On average, how much error would be expected between the sample mean and the population mean?
This is the standard deviation of the sample. We have that
. So
![s = \frac{\sigma}{\sqrt{n}} = \frac{20}{\sqrt{16}} = 5](https://tex.z-dn.net/?f=s%20%3D%20%5Cfrac%7B%5Csigma%7D%7B%5Csqrt%7Bn%7D%7D%20%3D%20%5Cfrac%7B20%7D%7B%5Csqrt%7B16%7D%7D%20%3D%205)
The answer is 5.