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:

Parasites

Organisms that live on or in a host organism and get their food from or at the expense of their host.

Stool Specimen

A sample of feces collected for medical testing to identify pathogens, check for digestive tract issues, or monitor gastrointestinal health.

Tapeworms

Parasitic flatworms that live in the digestive tracts of vertebrates, including humans, often leading to various health problems.

Potassium Hydroxide

A chemical compound with the formula KOH, used in various industrial and chemical processes, including as a strong base.