Multiple Choice
A researcher collects a sample of individuals' productivity by measuring the number of words they typed in an hour during a writing session with 20 individuals. The sample mean is 1738.2 words this week. The individuals from last week's 20 individuals only had a mean of 1553.7 words. The pooled variance is 11545.9.
Calculate the Cohen's d for this mean difference.
A) .02
B) 1.7
C) insufficient information
D) -.02
Correct Answer:
Verified
Correct Answer:
Verified
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