One sample from an independent measures study has n = 4 with SS = 100 The other sample has n = 8 and SS = 140
a) Compute the pooled variance Sᵖ² = (S*S₁+ S*S₂)/(d*f₁+ d*f₂)
b) Compute the estimated standard error for the mean difference Sₘ₁₋ₘ₂ = √ Sᵖ²/n₁+Sᵖ² /n₂