A random sample of n = 16 scores is obtained from a population with a mean of

Question:

A random sample of n = 16 scores is obtained from a population with a mean of µ = 45. After a treatment is administered to the individuals in the sample, the sample mean is found to be µ = 49.2.
a. Assuming that the sample standard deviation is s = 8, compute r2 and the estimated Cohen's d to measure the size of the treatment effect.
b. Assuming that the sample standard deviation is s = 20, compute r2 and the estimated Cohen's d to measure the size of the treatment effect.
c. Comparing your answers from parts a and b, how does the variability of the scores in the sample influence the measures of effect size?
Fantastic news! We've Found the answer you've been seeking!

Step by Step Answer:

Related Book For  book-img-for-question

Essentials Of Statistics For The Behavioral Sciences

ISBN: 9781133956570

8th Edition

Authors: Frederick J Gravetter, Larry B. Wallnau

Question Posted: