A Teacher Uses Two Different CAI Programs to Remediate a Randomly

question 48

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.

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Definitions:

Substituted

Replaced one element with another.

Accurate

Free from errors, mistakes, or distortions; precise and correct in all details.

Negative Expression

Phrasing or wording that conveys a negative connotation or implies something undesirable or less than optimal.

Least Negative

A communication strategy that presents unfavorable information in the most positive or least damaging way possible.