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. $$\begin{array} { l l l l l l l l l l }
\text { Mathematics } & 347 & 440 & 327 & 456 & 427 & 349 & 377 & 398 & 425 \
\hline \text { Verbal } & 285 & 378 & 243 & 371 & 340 & 271 & 294 & 322 & 385
\end{array}$$

Question

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. $$\begin{array} { l l l l l l l l l l } 
\text { Mathematics } & 347 & 440 & 327 & 456 & 427 & 349 & 377 & 398 & 425 \
\hline \text { Verbal } & 285 & 378 & 243 & 371 & 340 & 271 & 294 & 322 & 385
\end{array}$$

Quizplus · Accepted Answer

The Answer is H₀ : The math scores are equal to or less than the verbal scores. H₁ : The math scores are greater than the verbal scores.
Test statistic: x=0 . Critical value: x=1 .
Reject the null hypothesis. There is sufficient evidence to support the claim that the math scores are greater than the verbal scores.

A Standard Aptitude Test Is Given to Several Randomly Selected