Help

Lesley E. Tan investigated the relationship between lefthandedness vs. right-handedness and motor competence in preschool children. Random samples of 11 left-handed preschool children and 12 right-handed preschool children were given several tests of motor skills to determine if there is evidence of a difference between the children based on this experiment. The experiment produced the means and standard deviations shown below. Determine the appropriate test and best distribution to use for that test. Left- Right- handed handed -- l Sample mean Left- Right- handed handed 16.31 12.58 ; Sample standard . deviation L ' l I Matched or paired samples, Student's-t distribution Two independent means, Student's-t distribution 0 Two independent means, normal distribution Two population proportions, normal distribution