135000/6000=X
22.5=X
So this building would need 23 fire extinguishers <span />
Answer:
That would be 2/3
Step-by-step explanation:
1/3 would be the first line after 0 and 3/3 is = to 1 so the correct answer is 2/3
It would be more than 100 inches because in one foot is 12 inches, so take 100 x 12 = 1200 inches
This is not possible. False.
(BLASPHEMY I SAY!)
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