Answer:
The final value of .
Step-by-step explanation:
Given:
We have to find the value of
Steps to be followed:
- Step 1:Bring all the variables one left side of the equation.
Subtract 8b both side.
- Step 2:Add the variable and constants on each side.
- Step 3:Subtract 11 on both side.
- Step 4:Divide -11 on both sides of the equation.
So the final value of b is 29/11.
It’s b if you are predicting something.
Answer:
a) P ( 3 ≤X≤ 5 ) = 0.02619
b) E(X) = 1
Step-by-step explanation:
Given:
- The CDF of a random variable X = { 0 , 1 , 2 , 3 , .... } is given as:
Find:
a.Calculate the probability that 3 ≤X≤ 5
b) Find the expected value of X, E(X), using the fact that. (Hint: You will have to evaluate an infinite sum, but that will be easy to do if you notice that
Solution:
- The CDF gives the probability of (X < x) for any value of x. So to compute the P ( 3 ≤X≤ 5 ) we will set the limits.
- The Expected Value can be determined by sum to infinity of CDF:
E(X) = Σ ( 1 - F(X) )
E(X) = Limit n->∞ [1 - 1 / ( n + 2 ) ]
E(X) = 1
Answer:
x=-2 and 2
Step-by-step explanation:
x^2-4=0
(x-2)(x+2)=0
x=-2 and 2
Answer:
6966969696969
Step-by-step explanation: