Lesley E. Tan investigated the relationship between left-handedness vs. right-handedness and motor competence in preschool children. Random samples of 14 left-handed preschool children and 15 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-handed	Right-handed
Sample size	14	15
Sample mean	90.5	92.5
Sample standard deviation	18.14	14.54

		Two independent means, normal distribution
		Two independent means, Student's-t distribution
		Two population proportions, normal distribution
		Matched or paired samples, Student's-t distribution

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