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The use of MSw in Fisher’s protected t tests is based on the assumption that: all...

The use of MSw in Fisher’s protected t tests is based on the assumption that:

all of the populations have the same variance.

all of the samples have the same size.

all of the populations have the same mean.

all assumptions are correct.

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Answer #1

correct option is

all of the populations have the same variance.

(as MSw is a measure of pooled standard deviation which is valid only when considering all the population have same variance)

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