A study published in the journal of Nature claimed that students showed an increase in average score on IQ tests after listening to a Mozart piano sonata (The Mozart Effect). The study generated much interest among the general public and researchers. Suppose you tried to verify the claim as follows. Thirty students were randomly assigned into two groups of 15 each. To the students in the first group, an IQ test was administered after they listened a Mozart piano sonata for 10 minutes. To the second group, the same test was administered without the music. The following are the results: Sample 1 n1 = 15 x1 = 103.12 s1 = 5.7 Sample 2 n2 = 15 x2 = 99.9 s2 = 6.2