Need help for noise interfere question .

[moonnightingale]

The question says

The interferer
is on with probability .25 and off with probability .75.
The average transmit power is 10 mW,

And solution says

0.75P1 + 0.25P2 = 10

and then he gives the answer
P1= 12.25 mW
P2=3.25mW

How he calculated P1 and P2
and P2 =3.25 mW

 

[JeanPellanda]

You should have other formula...
From here the unique thing we know is that P2 = 40 - 3P1.