Question: When performing a two sample t test to compare two populations means with small sample sizes, which one of the following assumptions is needed (a)

When performing a two sample t test to compare two populations means with small sample

sizes, which one of the following assumptions is needed

(a) the population of all measurements is normally distributed

(b) the two samples have measurements which are normally distributed

(c) the two populations of measurements are normally distributed

(d) the two samples of measurements are normally distributed.

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