Below Is a Sorted Stem-And-Leaf Diagram for the Measured Speeds $=10$

question 108

Multiple Choice

Below is a sorted stem-and-leaf diagram for the measured speeds (miles per hour) of 49 randomly chosen vehicles on highway I-80 in Nebraska. How many vehicles were traveling exactly the speed limit (70 mph) ? stem unit $=10$
leaf unit $=1$
$\begin{array}{rrl}\text { Frequency } & \text { Stem Leaf } \\1 & 4 & 9 \\1 & 5 & 5 \\17 & 6 & 01222455556688999 \\19 & 7 & 0111233345666778999 \\7 & 8 & 0133557 \\\underline{4} & 9 & 0122 \\49 &\end{array}$

• A)0
• B)1
• C)19
• D)Impossible to tell

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Definitions:

Microscope

An instrument used to see objects that are too small for the naked eye, expanding our understanding of microscopic worlds.

Condenser

A device or unit used to condense a substance from its gaseous to liquid state, commonly found in HVAC systems, refrigeration, and laboratory apparatus.

Iris

The colored part of the eye that controls the size of the pupil and the amount of light reaching the retina.

Substage

In microscopy, the part of the microscope below the stage, often housing the illuminator and condenser, used to adjust the intensity and focus of light on the specimen.