Here Is the Distribution of Workers a Restaurant Keeps on Staff

question 67

Multiple Choice

Here is the distribution of workers a restaurant keeps on staff during a 1-hour shift.

$\begin{array}{|l|l|l|l|l|}\hline \text {probability} & 0.10 & 0.25 & 0.55 & 0.10 \\\hline \text { \# of workers} & 3 & 4 & 5 & 6 \\\hline\end{array}$

If the restaurant is open for 8 hours each day, what are the mean and standard deviation for the total number of workers in a day, respectively? (assume that the each hour is independent)

• A) 37.2, 2.24
• B) 37.2, 6.34
• C) none of these
• D) 36, 8.88
• E) 36, 3.14

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Definitions:

Unit of Output

The basic measure of productivity or product which is generated by a production process, operation, or project.

Competitive Market Economy

A system where market forces govern the production, distribution, and pricing of goods and services, featuring many buyers and sellers and free entry and exit from the market.

Least-Cost

A principle or method of minimizing the costs of production or operation while achieving the desired output or quality.

Production Technique

Methods or processes used in the creation of goods or services, often focusing on increasing efficiency or quality.