Two samples from the same population both have m = 84 and s2 = 20; however, one sample has n = 10 and the other has n = 20 scores. both samples are used to evaluate a null hypothesis that mu = 80 and to compute cohen's d. how will the outcomes of the two samples compare?

Statements reasons 1. ab ? cd; ad ? bc 1. given 2. ac ? ac 2. reflexive property 3. ? adc ? ? cba 3. ? 4. ? dac ? ? bca; ? acd ? ? cab 4. cpctc 5. ? dac and ? bca are alt. int. ? s; ? acd and ? cab are alt. int. ? s 5. definition of alternate interior angles 6. ab ? cd; ad ? bc 6. converse of the alternate interior angles theorem 7. abcd is a parallelogram 7. definition of parallelogram what is the missing reason in step 3?