Question

A random variable x can take the
Values 1, 0 and 1 with respective probabilites
0.2, 0.5 and 0.3 The expected value of x is.​

Answer 1

Answer:

Step-by-step explanation:

We are given the following data ;

X P(X) X * P(X)

-1 0.2 -0.2

0 0.5 0

1 0.3 0.3

Expected value of X = \frac{\sum X*P(X)}{\sum P(X)}

∑P(X)

∑X∗P(X)

= (-0.2 + 0.3) ÷ 1 = 0.1

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