Use random-variable notation to represent the event.
-The following table displays a frequency distribution for the number of siblings for students in one middle school. For a randomly selected student in the school, let X denote the number of siblings of
The student. $\begin{array}{r|rrrrrrrr}
\text { Number of siblings } & 0 & 1 & 2 & 3 & 4 & 5 & 6 & 7 \
\hline \text { Frequency } & 189 & 245 & 102 & 42 & 24 & 13 & 5 & 2
\end{array}$

Use random-variable notation to represent the event that the student obtained has fewer than two siblings.
A)$\{ X \leq 2 \}$
B) $\{ X

Question

Use random-variable notation to represent the event.
-The following table displays a frequency distribution for the number of siblings for students in one middle school. For a randomly selected student in the school, let X denote the number of siblings of
The student. $\begin{array}{r|rrrrrrrr}
\text { Number of siblings } & 0 & 1 & 2 & 3 & 4 & 5 & 6 & 7 \
\hline \text { Frequency } & 189 & 245 & 102 & 42 & 24 & 13 & 5 & 2
\end{array}$

Use random-variable notation to represent the event that the student obtained has fewer than two siblings.  
A)$\{ X \leq 2 \}$
B) $\{ X < 2 \}$
C) $\{ 0,1 \}$
D) $P \{ X < 2 \}$

Quizplus · Accepted Answer

The event that a student has fewer than two siblings is represented by $X < 2$, which includes students with 0 or 1 sibling but not 2.

Use Random-Variable Notation to Represent the Event Use Random-Variable Notation to Represent the Event That the Student