A Researcher Is Testing the Effect of a New Cold

question 59

Essay

A researcher is testing the effect of a new cold and flu medication on mental alertness.A sample of n = 9 college students is obtained and each student is given the normal dose of the medicine.Thirty minutes later,each student's performance is measured on a video game that requires careful attention and quick decision making.The scores for the nine students are as follows: 6,8,10,6,7,13,5,5,3.
a. Assuming that scores for students in the regular population average μ = 10, are the data sufficient to conclude that the medication has a significant effect on mental performance? Test at the .05 level of significance.
b. Compute r2, the percentage of variance explained by the treatment effect.
c. Write a sentence demonstrating how the outcome of the hypothesis test and the measure of effect size would be presented in a research report.

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Definitions:

Materials Costs

The costs associated with the raw materials used in the production of goods or services.

Factory Overhead

Indirect manufacturing costs that cannot be directly attributed to specific products, including costs associated with maintaining and operating the production facilities.

Materials Requisitions

Documents or electronic requests used in manufacturing to authorize the release of materials from inventory for production.

Job Order Cost Accounting

A cost accumulation and assignment method, specifically used for tracking and reporting costs for each individual job or project separately.