The Data in the Following Table Show the Outcomes of the Testing

question 100

Multiple Choice

The data in the following table show the outcomes of the testing of an allergy drug on 500 people. $$\begin{array} { l | c | c | c | c } & \begin{array} { c } \text { Allergy } \\\text { drug }\end{array} & \text { Placebo } & \begin{array} { c } \text { Control } \\\text { (no treatment) }\end{array} & \text { Total } \\\hline \text { Improvement } & 145 & 85 & 41 & 271 \\\text { No improvement } & 55 & 115 & 59 & 229 \\\text { Total } & 200 & 200 & 100 & 500\end{array}$$
-What is the probability that a randomly selected person either was given the placebo or
Wasn't given the placebo?

• A)0
• B)0.772
• C)0.5
• D)1

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Definitions:

Intercostals Nerves

Nerves located between the ribs that are responsible for conveying information to and from the spaces between the ribs.

Lumbar Region

The part of the lower back between the ribs and the pelvis.

Dermatome

Area of skin supplied by a spinal nerve.

Spinal Nerve

A mixed nerve, which carries motor, sensory, and autonomic signals between the spinal cord and the body.