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Problem 3. Let X be a discrete random variable, with probability distribution P(X x)0.95, P(Xx2) 0.05 Determine X1 and X2 such that E[X] 0 and σ2(X)-7. Problem 4. The life X, in hours, of a certain device, has a pdf 100 x()t2 2 100 0, t<100 (a) What are the probability that this device will survive 150 hours of operation? (b) Find the life expectancy of the device.

please do them both for high rate

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e adissele Rardon Vsiale, oith om haiabe ihution, t us auven p(x %) 0.05 6.95x, to. 05x2-0 -095 0.05 tu also 00,2 0.95242-10.05 (-1%). ㅋ 19 43 0.606 0n subst -11-511 as 지:-o. 606, on substtabii be get -19 (-0.606) 11-514Hfe X, in hauss l a Colain device, LAI IDO 2 100 L 2100 is deie iye 5ohoues loe Can wsite obabib as - P(X>15o 100 d 15 0 -loo 2. lso 2 : lo0 -2-+1 150 too 156 150 -100 o 66 150150 holas 업 ope,talion :0, 66-1 いExpectancy . .. device loo. dl t00 loo 00 Loloo 100 F lo0 - tooC6 - 2) uice is t Therie one, the expeclancy the device s vay ge

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please do them both for high rate Problem 3. Let X be a discrete random variable,...
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