You are given the probability generating function of X: PX(z)=(0.8z+0.2)10 Calculate the coefficient of variation of X.
Answers
Answer:
Var(X)=1.6
Step-by-step explanation:
Formula for calculating the coefficient of variation for a probability generating function:
Var(X)= PX''(1) + PX'(1) - [PX'(1)]² ........... eq(1)
Now compute each individual term in the above formula.
PX'(z) =
PX'(1) = = 8
[PX'(1)]² = 64
PX''(z) =
PX''(1) = = 57.6
Substitute all terms back in eq(1)
Var(X)= 57.6 + 8 - 64
Var(X)= 1.6
Related Questions
The bar diagram represents the ratio of points scored by the home team and the visiting team in a basket ball game. How many points did the visiting team score if the home team scored 84 points?
What is the equivalent of 27/5 in decimal form?
What is the value of the angle on the top left of this quadrilateral 112°88°90°70°
The GCF of 15 and 27 is _____. Numerical Answers Expected! Answer for Blank 1:
Answers
113.04 in2
56.52 in2
256.34 in2
1017.36 in2
Answers
Answer:
The answer is 254.34in².
Step-by-step explanation:
Given that the diameter is 2 times the radius. So the radius will be 9 in. Next, you have to find the area of circle, A = π × r² :
A = π × r²
Let π = 3.14, r = 9,
A = 3.14 × 9²
A = 254.34 in²
Simplified expression-?
Value-?
Answers
The expression 3x + 7x - 28 + 31 - 8x simplifies to 2x + 3. When x equals 2043, the value of the Simplifying Expression is 4089.
The given expression is 3x + 7x - 28 + 31 - 8x.
To simplify the expression, we first group together the like terms.
Thus, the expression becomes (3x + 7x - 8x) + (31 - 28).
This simplifies further to 2x + 3.
Next, to find the value of the expression for x = 2043, we substitute 2043 for x into the simplified expression, resulting in 2*2043 + 3 = 4089.
Therefore, the simplified version of the expression is 2x + 3 and the value of the expression for x = 2043 is 4089.
Learn more about Simplifying Expression here:
#SPJ3
Answers
This one side is 5 cm which means it's volume is 125cm^3 or cubic centimeters.
Multiply 125 * 12 to get the volume of all 12 cubes combined.
(1500 cubic centimeters)
To find the volume of one ice cube, you'll need to find the length, width, and height. In the question, it states that each cube is 5cm. So, 5cm will be the length, width, and height. So you'll need to multiply 5 three times (5*5*5) ---> (25*5) ---> (125).
The volume, V, of one ice cube is 125cm³
Now to find the total volume of all of the cubes, you'll need to multiply 125 by 12. After doing so, you'll get a volume of...
V=1500cm³
I hope this helps!
Answers
Answer: a=24
Step-by-step explanation:
Lets find the line's formula (equation of the line).
As known the general formula of any straight line (linear function) is
y=kx+b
Lets find the coefficient k= (Yb-Ya)/(Xb-Xa)=(9-7)/(-4-3)=-2/7
(Xb;Yb)- are the coordinates of point B
(Xa;Ya) are the coordinates of point A
Now lets find the coefficient b. For this purpose we gonna use the coordinates of any point A or B.
We will use A
7=-2/7*3+b
7=-6/7+b
b=7 6/7
So the line' s equation is y= -2/7*x+7 6/7
Now we gonna find the value of a usingcoordinates of point C.
Yc=1, Xc=a
1=-2/7*a+7 6/7
2/7*a= 7 6/7-1
2/7*a=6 6/7
(2/7)*a=48/7
a=48/7: (2/7)
a=24
Answer:
a=24
Step-by-step explanation:
Answers
The ratio of AB:BC is 3:7
3 + 7 = 10
the length of AC = 120
so 120 / 10 = 12
BC = 7 x 12 = 84
Answer
The length of BC = 84