Use these descriptive statistics to find the power for this study. Please show calculations: First, find s2 pooled. Then find g (the sample estimate of d - remember to take the square root of s2 pooled). Always use the absolute value of g (or d) for these calculations. Find , remembering to replace d with g. Find the harmonic mean of the n's because you have unequal sample sizes. Assuming = .05 (two tailed), use the table to find the power.

The descriptives for the variable are: M1 = 66.0, s1 2 = 45.0, n1 = 36 for people who chose surgery to change their appearance and M2 = 63.0, s2 2 = 49.0, n2 = 84 for those who choose surgery for a physical reason.

Reference in question for calculations

Paper instruction reference SPSS 3