In a Sandwich Shop, the Following Probability Distribution Was Obtained

question 14

Multiple Choice

In a sandwich shop, the following probability distribution was obtained. The random variable x represents thenumber of condiments used for a hamburger. Find the mean and standard deviation for the random variable x. $$\begin{array} { c | c } \mathrm { x } & \mathrm { P } ( \mathrm { x } ) \\\hline 0 & 0.30 \\1 & 0.40 \\2 & 0.20 \\3 & 0.06 \\4 & 0.04\end{array}$$

• A) mean: 1.14; standard deviation: 1.04
• B) mean: 1.54; standard deviation: 1.30
• C) mean: 1.30; standard deviation: 2.38
• D) mean: 1.30; standard deviation: 1.54

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Definitions:

Trade Restrictions

Measures imposed by governments to control or limit the exchange of goods and services across their borders, including tariffs, quotas, and embargoes.

Comparative Advantage

The ability of an entity to produce goods or services at a lower opportunity cost than others, leading to more efficient trade.

Exports Cars

The activity of selling and shipping cars from one country to another, contributing to a country's trade balance.

Imports Cheese

The act of bringing cheese into one's country from another to sell.