Question

One of the psychologist's findings is that 18 months after the workshop, a sample of 49 job seekers who received training on setting career goals scored an average of 6.5 as measured on a 9-point job search satisfaction scale, with a standard deviation of 1.2.The typical job seeker scores 5.8 points.

The psychologist finds that the estimated Cohen's d is:________.
a) 0.583
b) 0.015
c) 4.084
d) 0.438

Answer 1

The psychologist finds that the estimated Cohen's d is 0.583.

Explanation:

The Cohen's d is used to calculate the effect size, appied when a null hypothesis is rejected.

It can be calculated for this case of population mean as:

`d=(M-\mu)/(\sigma)=(6.5-5.8)/(1.2)=(0.7)/(1.2)=0.583`

The psychologist finds that the estimated Cohen's d is 0.583.