Question 23 of 37 1 Points A researcher is interested in investigating whether older brothers tend to be more or less extraverted (outgoing), and plans to test this with the appropriate test at the .05 level. She randomly samples 8 younger brothers, and administers her extraversion instrument. Then, separately, she randomly samples 8 older brothers from other (totally separate) pairs of siblings, and administers her extraversion instrument. The extraversion scores from the two samples appear to the right, along with descriptive statistics. (Note: a higher score indicates greater extraversion.) (Do NOT assume homogeneity of variance for the t-test.) X1=Younger X2=Older 18 18 19 16 10 19 12 17 15 15 13 19 11 15 15 22 Mean 13.571 17.625 Variance 9.286 5.696 Assume that the appropriate p-value for this study was determined to be .015 (which it might or might not actually be; don't worry about whether it is or not). Using this value of .015, what should the researcher's inference be (assume a=.05)