4. Probability Distributions: Random Variables
Expected Value of a Random Variable
Suppose #X# denotes the number of pets a randomly selected adult in the United Kingdom has. The probability distribution of #X# is:
\begin{array}{c|cccccc}
x&0&1&2&3&4\\
\hline
\mathbb{P}(X=x)&0.40&0.32&0.18&0.07&0.03\\
\end{array}
Compute the expected value of #X#. Round your answer to #2# decimal places.
\begin{array}{c|cccccc}
x&0&1&2&3&4\\
\hline
\mathbb{P}(X=x)&0.40&0.32&0.18&0.07&0.03\\
\end{array}
Compute the expected value of #X#. Round your answer to #2# decimal places.
| #\mathbb{E}[X]=# |
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