A Bin at the Store Is Filled with T-Shirts $0.5$ You Need to Buy Four T-Shirts for Your Friends

question 15

Multiple Choice

A bin at the store is filled with T-shirts. They are all sized either small or large, and there are approximately equal numbers of each, so the chance of picking either size is $0.5$ . You need to buy four T-shirts for your friends, three larges and one small. You want to know how many shirts you must pull out of the bin before you have at least three larges and one small. Use the random numbers table below to simulate your $\mathrm { T }$ -shirt selections. The highlighted numbers were randomly chosen and serve as the first selections for the different trials. Repeat the simulation five times, beginning each trial at a different highlighted number. Work down the columns, and move from left to right, column to column as needed.

Let the even digits correspond to selecting a small, and the odd digits correspond to select a large.
$\begin{array}{l|l}\text { Number } & \text { Size } \\\hline 0,2,4,6,8 & \text { Small } \\1,3,5,7,9 & \text { Large }\end{array}$

What is the greatest number of shirts your experiments indicate you need to pull out of thı before you have three larges and one small?

e bin

• A) 6
• B) 7
• C) 8
• D) 5

---

Definitions:

Vestibular Sense

The sensory system responsible for providing our brain with information about motion, head position, and spatial orientation; it also aids in maintaining balance.

Olfaction

The sense of smell, a chemical sense through which organisms perceive and identify different scents or odors in their environment.

Kinesthesia

The sense that detects bodily position, weight, or movement of the muscles, tendons, and joints, enabling the perception of body movement and orientation.

Sensory Interaction

The principle that one sense can influence or interact with another, as when the taste of food is affected by its smell.