3 years ago

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Mathematics

1 answer:

MariettaO [177]3 years ago

3 0

Help it not answer you have to say helllooofrrr Dan holloywood helpoopp

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C. 2

Step-by-step explanation:

Cohen's d is a parameter used to express the standardised difference between two means. It is defined as the difference between the means divided by the pooled standard deviation.

In this case, the difference between both means (M2-M1) is 8. As for the pooled standard deviation, simply take the square root of the given pooled variance:

$S=\sqrt{S^2}\\S=\sqrt{16} \\S= 4$