Answered: A sample of n = 16 high school students…

MATLAB: An Introduction with Applications

6th Edition

ISBN:9781119256830

Author:Amos Gilat

Publisher:Amos Gilat

Chapter1: Starting With Matlab

Section: Chapter Questions

Problem 1P

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A sample of n = 16 high school students took the SAT before and after a special training course. For each student, the difference between the first score and the second score was measured, and the results showed that their SAT scores averaged M_D= 18 points higher after the course with SS = 6000. On the basis of this sample, can you conclude that there was a significant difference after taking the training course? Use a two-tailed test at the .05 level of significance.

Are the data sufficient to conclude that the training course improve SAT scores? (Be sure to give your conclusion, too)
If the researcher had used a sample of n = 5 high school students and obtained the same mean difference (M_D), would the results be sufficient to reject H₀? (Be sure to give your conclusion, too)
Use Cohen’s d to measure the effect size. What is the size of effect?

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