Exercise · ZW-RANDOM-VARIABLE-001 · ★☆☆ Basic
Two coins are tossed and \(X\) is the number of heads. What is \(X(\text{HT})\), where H = heads and T = tails?
Choose one option.
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- B. 1
Explanation
The outcome HT has exactly one head, so \(X(\text{HT})=1\).
Review the concept: Random variable
A random variable \(X\) is a function that assigns a real number to each outcome of the sample space \(\Omega\) of a random experiment.
\[X:\Omega\to\mathbb{R}\]
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