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:

Controllable

Refers to costs or elements within a business that can be directly managed, influenced, or altered by decisions of management.

Noncontrollable

Refers to expenses or influences that cannot be altered or changed by the management due to external constraints or fixed contract terms.

Flexible Budget

A budget that adjusts or varies with changes in the volume or activity level of a company.

Master Budget

A comprehensive financial planning document that consolidates all of the smaller budgets within a company into one overview, showing the total planned activities for an upcoming period.