A Standard Aptitude Test Is Given to Several Randomly Selected

question 24

Essay

A standard aptitude test is given to several randomly selected programmers, and the scores are given below for the mathematics and verbal portions of the test. Use the sign test to test the claim that programmers do better on the mathematics portion of the test. Use a 0.05 level of significance. $$\begin{array} { l l l l l l l l l l } \text { Mathematics } & 347 & 440 & 327 & 456 & 427 & 349 & 377 & 398 & 425 \\\hline \text { Verbal } & 285 & 378 & 243 & 371 & 340 & 271 & 294 & 322 & 385\end{array}$$

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Definitions:

Brain Stem

The part of the brain connecting the spinal cord with the forebrain and cerebrum, responsible for basic life functions such as breathing and heartbeat.

Choroid Plexus

A network of blood vessels in each ventricle of the brain, responsible for the production of cerebrospinal fluid (CSF).

Cerebellum

A part of the brain located at the back of the skull that coordinates voluntary movements and maintains balance.

Postcentral Gyrus

The primary somatosensory cortex located in the parietal lobe of the brain, responsible for processing tactile and proprioceptive information.