[الغريب المهاجر]

بسم الله الرحمن الرحيم
و به نستعين

Q.1:given the probability distribution function of x by :

x: 0 1 2
fx):A B C

find the value of :A ,B,and C
IF YOU KNOW the second moment about the mean is 1.1 and the first moment about the origin is 0.7 ???


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Q.3:depending on the next moment generating function of the random variable X : M(t)=e^(t^2 ) :find

1. p(x=2)
2.find the mean of X
3. FIND THE VARIANCE of -2x
4.find the the second moment about the origin

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Q.4:IF WE rolled a dice 6 times and win if we get one of the faces 5and 6 :
1. the probability of geting 3 success.
2. the mean and the variance for the number of wining

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