The Following Frequency Table Summarizes the Ages of 60 Shoppers

question 39

Multiple Choice

The following frequency table summarizes the ages of 60 shoppers at the local grocery store. $\begin{array} { c c } \text { Age of the shopper } & \text { Frequency } \\\hline 15 - 23 & 10 \\24 - 32 & 21 \\33 - 41 & 10 \\42 - 50 & 8 \\51 - 59 & 5 \\60 - 68 & 6\end{array}$
The sample mean for the above frequency table is calculated as 36.25.Calculate the approximate sample standard deviation for this data set.

• A)181.08
• B)184.15
• C)26.83
• D)13.46
• E)13.57

---

Definitions:

Phenylacetonitrile

An organic compound often used as an intermediate in the synthesis of various pharmaceuticals, characterized by a benzene ring attached to a nitrile group.

Toluene

A colorless, water-insoluble liquid hydrocarbon with the chemical formula C7H8, used as an industrial solvent.

P-Toluic Acid

A type of benzoic acid derivative where the methyl group is positioned para to the carboxylic acid group.

Toluene

An aromatic hydrocarbon used as an industrial solvent, known for its benzene ring attached to a methyl group.