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. M = _______________7____________ SS = _____72______________________ s² = ___________________________ SM = __________1________________________________ tcritical = ________________________ tcalculated = ____________________________________ Decision = _______________________ B. Compute r2, the percentage of variance explained by the treatment effect. r2 = ________________________ 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.
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.
M = _______________7____________
SS = _____72______________________
s² = ___________________________
SM = __________1________________________________
tcritical = ________________________
tcalculated = ____________________________________
Decision = _______________________
B. Compute r2, the percentage of variance explained by the treatment effect.
r2 = ________________________
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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