A Teacher Uses Two Different CAI Programs to Remediate a Randomly

question 115

Essay

A teacher uses two different CAI programs to remediate a randomly selected group of
students. Results for two independent samples on a standardized test are listed in a table
below. At the 0.05 level of significance, use the Wilcoxon rank-sum test to test the hypothesis
that the sample results are from populations with equal medians. $\begin{array}{|llll|llll|}\hline{\text { Program I }} &&&&{\text { Program II }} \\\hline 60 & 75 & 61 & 63 & 66 & 89 & 68 & 77 \\\hline 86 & 69 & 64 & 70 & 84 & 80 & 81 & 87 \\\hline 72 & 82 & 59 & 78 & 73 & 91 & 93 \\\hline & & & & 94 & 95 & & \\\hline\end{array}$

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Definitions:

Drones

Unmanned aerial vehicles (UAVs) operated by remote control or autonomous software, used for various purposes including photography, surveillance, and delivery.

Total Variable Costs

The expenses that change in proportion to the activity of a business.

Drones

Unmanned aerial vehicles used for a variety of purposes including surveillance, delivery, agriculture, and photography.

Diminishing Returns

A principle stating that as investment in a particular area increases, the rate of profit from that investment, after a certain point, will begin to decrease.