In a Certain Town, 40% of Adults Have a College $\begin{array}{c|c}\mathrm{x} & \mathrm{P}(\mathrm{x}) \\\hline 0 & 0.1296 \\1 & 0.3456 \\2 & 0.3456 \\3 & 0.1536 \\4 & 0.0256\end{array}$

question 140

Multiple Choice

In a certain town, 40% of adults have a college degree. The accompanying table describes the probability distribution for the number of adults (among 4 randomly selected adults) who have a college degree. Find the standard deviation for the probability distribution.

$\begin{array}{c|c}\mathrm{x} & \mathrm{P}(\mathrm{x}) \\\hline 0 & 0.1296 \\1 & 0.3456 \\2 & 0.3456 \\3 & 0.1536 \\4 & 0.0256\end{array}$

• A) \(\sigma = 0.96\)
• B) \(\sigma = 1.88\)
• C) \(\sigma = 1.12\)
• D) \(\sigma = 0.98\)

---

Definitions:

Remittance

A transfer of money by a foreign worker to an individual in his or her home country.

Discount Period

The time frame in which a buyer can pay less than the full amount due, often in return for early payment to the seller.

Complement Rate

Another term for a probabilistic or statistical rate that completes another rate to 100% or a whole when combined.

Net Price

The price of a good or service after all discounts, rebates, and other cost reductions have been applied, not including additional charges such as shipping or taxes.