Find the Mean of the Random Variable A) $1.771$ B) $1.479$ C) $2.5$

question 147

Multiple Choice

Find the mean of the random variable.
-The random variable X is the number of siblings of a student selected at random from a particular secondary school. Its probability distribution is given in the table. Round the answer to three
Decimal places when necessary. $\begin{array}{r|cccccc}\mathrm{x} & 0 & 1 & 2 & 3 & 4 & 5 \\\hline \mathrm{P}(\mathrm{X}=\mathrm{x}) & \frac{7}{24} & \frac{7}{24} & \frac{3}{16} & \frac{7}{48} & \frac{1}{24} & \frac{1}{24}\end{array}$

• A)\(1.771\)
• B) \(1.479\)
• C) \(2.5\)
• D) \(1.375\)

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Definitions:

Ground Tissue

The tissue in plants that makes up the majority of a plant's body, involved in photosynthesis, storage, and support.

Meristem

Zone of undifferentiated parenchyma cells, the divisions of which give rise to new tissues during plant growth.

Secondary Xylem

The part of a plant that contributes to wood formation, responsible for water transport and structural support.

Cork Cambium

Lateral meristem that produces cork.