Question

Select the correct answer. x Probability 0 0.2 1 0.1 2 0.4 3 0.2 4 0.1 The probability distribution of x, a discrete random variable, is given in the table. What is the expected value of x? A. 0.8 B. 1.9 C. 2 D. 5

Answer 1

Answer: B. 1.9

Step-by-step explanation: I got this right on Edmentum

Answer 2

Answer: The option B. 1.9 is correct

Step-by-step explanation:

We are given the below information:

x Probability P(x)

0 0.2

1 0.1

2 0.4

3 0.2

4 0.1

The expected value of x is given below:

`E(x)=\sum x P(x)`

`=(0 * 0.2)+(1 * 0.1)+(2 * 0.4)+(3 * 0.2)+(4 * 0.1)`

`=0+0.1+0.8+0.6+0.4`

`=1.9`

Therefore, the expected value of x is 1.9