Compute the Standard Deviation of the Random Variable with the Given

question 51

Multiple Choice

Compute the standard deviation of the random variable with the given discrete probability distribution
$\begin{array} { c c } \hline x & P ( x ) \\\hline 0 & 0.2 \\10 & 0.25 \\15 & 0.1 \\20 & 0.45 \\\hline\end{array}$

• A)13
• B)58.5
• C)11.25
• D)7.6

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Definitions:

Forward Buying

Purchasing inventory in larger quantities than immediately needed, often in anticipation of price increases or high demand periods.

Lot Size

The quantity of items that are produced, purchased, or moved in a single batch or order.

Cycle Inventory

Inventory that companies maintain to facilitate production in batches or cycles, as opposed to continuous production.

Quantity Discounts

Price reductions offered to customers purchasing in large volumes, incentivizing bulk purchases and often used to reduce inventory holding costs.