An Educational Testing Service Designed an Achievement Test So That

question 48

Essay

An educational testing service designed an achievement test so that the range in student scores would be greater than 300 points. To determine whether the objective was achieved, the testing service gave the test to a random sample of 41 students and found that the sample mean and variance were 687 and 2605, respectively. Specify the null and alternative hypotheses for determining whether the test achieved the desired dispersion in scores. Assume that range = 6σ.

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Definitions:

Affective

Relating to moods, feelings, and attitudes; the emotional aspect of consciousness as opposed to cognitive or behavioral aspects.

Instrumental

Serving as a means or tool to achieve a desired goal or end.

Shared Language

A common mode of communication or terminology understood by a particular group or community.

Cross-Training

The practice of training in multiple athletic disciplines or skill sets to improve overall performance and reduce the risk of injury.