Answer:
i dont know
Step-by-step explanation:
Answer: 0.2205
Step-by-step explanation:
Given : Technology Services department at Lahey Electronics revealed company employees receive an average of "2.7" non-work-related e-mails per hour.
i.e. ![\lambda = 2.7](https://tex.z-dn.net/?f=%5Clambda%20%3D%202.7)
If the arrival of these e-mails is approximated by the Poisson distribution.
Then , the required probability is given by :-
![P(X=x)=\dfrac{\lambda^xe^{-\lambda}}{x!}\\\\P(X=3)=\dfrac{(2.7)^3e^{-2.7}}{3!}\\\\=0.22046768454\approx0.2205](https://tex.z-dn.net/?f=P%28X%3Dx%29%3D%5Cdfrac%7B%5Clambda%5Exe%5E%7B-%5Clambda%7D%7D%7Bx%21%7D%5C%5C%5C%5CP%28X%3D3%29%3D%5Cdfrac%7B%282.7%29%5E3e%5E%7B-2.7%7D%7D%7B3%21%7D%5C%5C%5C%5C%3D0.22046768454%5Capprox0.2205)
Hence, the probability Linda Lahey, company president, received exactly 3 non-work-related e-mails between 4 P.M. and 5 P.M. yesterday =0.2205
100/x =250/100
100 * 100 / 250 =x
X= 40
Answer:
16
Step-by-step explanation:
A square has same length on all sides.
So, 18x-20=42-13x
18x+13x=42+20
31x=62
x=62/31=2
Now you can substitute x=2 in one of the equations to find the length of the side.
18x-20 = (18*2)-20 = 36-20 = 16
Answer:
320 in
Step-by-step explanation: