Will medal and fan and ! the probability distribution of x, a discrete random variable, is given in the table. what is the expected value of x?

x probability
0 0.2
1 0.1
2 0.4
3 0.2
4 0.1

Expected value of a discrete random variable is:
E(X) = ∑ XiPi

E(X) = 0(0.2) + 1(0.1) + 2(0.4) + 3(0.2) + 4(0.1)
E(X) = 0 + 0.1 + 0.8 + 0.6 + 0.4
E(X) = 1.9

In short, Your Answer would be 1.9

Hope this helps!

You have 2 sides that are 2 cms and you have 6 sides that are 1/2 cm and you have 4 sides that are 1 cm. the smallest sides are 1/2 the medium sized sides are 1 and the smallest are 1/2. so to find the perimeter you have to add them all up together so your answer will be 11 cm's

If your asking how much altogether for 12 performance the answer will be 98,496.