Complete question:
A project is graded on a scale of 1 to 5. If the random variable, X, is the project grade, what is the mean of the probability
distribution below?
Grade(X)_____ 1_____2_____3_____4_____5
Frequency____3 _____5____ 9 ____ 5 ____ 3
P(X) : _______ 0.1 ___0.2 ___0.4 ___ 0.2 __0.1
Answer:
3
Step-by-step explanation:
Given the probability distribution :
Grade(X)_____ 1_____2_____3_____4_____5
Frequency____3 _____5____ 9 ____ 5 ____ 3
P(X) : _______ 0.1 ___0.2 ___0.4 ___ 0.2 __0.1
The mean of the distribution :
Σ(X * P(X)) :
(1*0. 1) + (2 * 0.2) + (3 * 0.4) + (4 * 0.2) + (5 * 0.1)
0.1 + 0.4 + 1.2 + 0.8 + 0.5
= 3
Other names for "plane Z" include:
___________________________
1) The "z-plane";
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2) The "complex plane";
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3) <span>the "domain of the </span>z<span>-transform"
_____________________________</span>
*see attachment for the figure referred to
Answer:
4 units
Step-by-step explanation:
Given that 
, therefore, it follows that:
,
If the ratio of YW to XW = 2:1, therefore, 
Cross multiply to find XW
Answer:
8+24
32
Step-by-step explanation:
4 times 2 is 8
6 times 4 is 24
By add two to the equation two
y=4
by solving two with the volume of y
3x+8=2 , 3x=-6 , x=-2
so the answer is a ( -2 ,4)
