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(Solved): Multiple Choice Question The pooled variance formula is s_(p)^(2)=((al-1):21(n2-1):22)/(-1 n^(2)-2), ...



Multiple Choice Question The pooled variance formula is

s_(p)^(2)=((al-1):21(n2-1):22)/(-1 n^(2)-2)

, When do we use pooled variance in a two sample test of means? Any time the samples have different standard deviations. When the population variances are unknown. When we think the two populations have equal variance.



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