To Test the Effect of Partial Day Care on Academic

question 79

Multiple Choice

To test the effect of partial day care on academic performance in young children, a researcher plans to use two groups of 4-year-olds from the same preschool class: one group is made up of randomly selected children who attend part-time day care; the other group includes randomly selected children who do not attend any day care other than preschool.Both groups will complete a brief test of academic performance during a regular preschool class.Which type of test should the researcher use to compare the mean scores of the two groups?

• A) paired-samples t test
• B) independent-samples t test
• C) single-sample t test
• D) z test

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Definitions:

Bullwhip Effect

A situation in supply chain management where slight shifts in demand from consumers cause increasingly amplified shifts in demand at the levels of manufacturers, distributors, and wholesalers.

Primary Causes

Fundamental reasons or root causes that directly lead to an event, situation, or outcome, distinct from secondary or tertiary factors.

Remedy

Refers to a treatment, solution, or means of correcting or improving a problem, situation, or condition.

Bullwhip Measure

A metric used to quantify the increase in fluctuation at higher tiers of a supply chain caused by small changes in demand at the consumer end.