Mean or Expected Value and Standard Deviation · Exercise 23

Complete the PDF and answer the questions.

$$\begin{array}{ccc}\text{x}& \text{P(x)}& \text{xP(x)}\\ \text{0}& \text{.3}& \\ \text{1}& \text{.2}& \\ \text{2}& & \\ \text{3}& \text{.4}& \end{array}$$

(a) Find the probability that x = 2.
(b) Find the expected value.

OpenStax, Statistics · §4.2 Mean or Expected Value and Standard Deviation · Exercise 23