A Random Sample of 20 Fourth-Grade Students Was Selected and Given

question 15

Short Answer

A random sample of 20 fourth-grade students was selected and given the math sub-test of the Peabody Individual Achievement Test (PIAT). The sample mean was found to be 38.07 with an estimated standard error of the mean of 2.11. The population mean was known to be 42.50. Test whether the sample could be representative of the population.

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Definitions:

Proportional Share

A portion or percentage of a whole which is allocated in relation to its size, quantity, or importance.

Team Dysfunction

Problems or barriers that prevent a team from working effectively together and achieving its goals.

Weaknesses

Aspects or attributes that diminish an individual's, group's, or organization's effectiveness, performance, or capability in certain areas.

Personal Acceptance Conformity

The tendency to adopt behaviors, attitudes, or values of a group in order to be accepted as a member.