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Hello I am having trouble figuring this out because of the the 2 SD? I am confused? Thank you! On a standardized test, t...

Hello I am having trouble figuring this out because of the the 2 SD? I am confused? Thank you!

On a standardized test, the mean history score for boys was 40(SD =15), whereas the mean score for girls was 70(SD=35), Calculate Cohen’s d to determine the effect size of this difference.

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Mi M2 d = Spooled Spooled= M1 70 S1 35 M2 40 S2 15 2 1450 352 152 725 26.92 Spooled 2 30 2 70 40 d 26.92= 1.1144 1,11 26,92

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