A discrete random variable x can assume five possible values: 2, 3, 5, 8, 10. Its probability distribution is shown below. Find the probability that the random variable x is a value greater than 5.

$$\begin{array} { c | c c c c c }
\mathrm { x } & 2 & 3 & 5 & 8 & 10 \
\hline \mathrm { p } ( \mathrm { x } ) & 0.10 & 0.20 & 0.30 & 0.30 & 0.10
\end{array}$$
A) 0.70
B) 0.60
C) 0.40
D) 0.30

Question

A discrete random variable x can assume five possible values: 2, 3, 5, 8, 10. Its probability distribution is shown below. Find the probability that the random variable x is a value greater than 5.

$$\begin{array} { c | c c c c c } 
\mathrm { x } & 2 & 3 & 5 & 8 & 10 \
\hline \mathrm { p } ( \mathrm { x } ) & 0.10 & 0.20 & 0.30 & 0.30 & 0.10
\end{array}$$
A) 0.70
B) 0.60
C) 0.40
D) 0.30

Quizplus · Accepted Answer

The probability that x is greater than 5 is the sum of the probabilities of x being 8 or 10, which is 0.30 + 0.10 = 0.40.

A Discrete Random Variable X Can Assume Five Possible Values