Answer:
Mean = 2.14
Standard deviation = 2.40
Step-by-step explanation:
The calculation of mean and standard deviation is shown below:-

= 2.14
So, the mean is 2.14
Now, For computing the standard deviation first we need to find out the variance which is shown below:-
Variance is
![Var(X) = P(X^2) - [P(X)]^2\\\\ P(X^2) = .07\times (0^2) + .20\times (0^1) + .38\times (0^2) + .22\times (0^3) +0.13\times (0^4)](https://tex.z-dn.net/?f=Var%28X%29%20%3D%20P%28X%5E2%29%20-%20%5BP%28X%29%5D%5E2%5C%5C%5C%5C%20P%28X%5E2%29%20%3D%20.07%5Ctimes%20%280%5E2%29%20%2B%20.20%5Ctimes%20%280%5E1%29%20%2B%20.38%5Ctimes%20%280%5E2%29%20%2B%20.22%5Ctimes%20%280%5E3%29%20%2B0.13%5Ctimes%20%280%5E4%29)
After solving the above equation we will get
= 5.78
Now, the standard deviation is 

= 2.404163056
or
= 2.40
Yes, we can prove that the given figure is a parallelogram.
From the given figure, we can see that the given quadrilateral opposite angles and congruent. And we know that if a quadrilateral has two opposite angles congruent, then the quadrilateral is a parallelogram.
Therefore, we can say that the given figure is a parallelogram.
From the given options, second option is correct.
Therefore, the correct option is:-
Yes, opposite angles are congruent.
Any rational number that is -9 up (-10, -11, -12, etc.) is an integer less than -8
Answer:
corrcect
Step-by-step explanation:
Base times Hight