PSY206 Mastery test: 1 Version: Brianna Miller : 1 A researcher is investigating the effect of listening to classical music on IQ scores. A sample of n = 13 students participated in the study. They each listened to 20 minutes of classical music prior to taking an IQ test. Their IQ scores were as follows: 109, 81, 128, 132, 102, 120, 101, 109, 122, 105, 112, 131, 129. (IQ scores in the general population are normally distributed with / = 100 and o = 15.) Analyze these data to determine whether the mean IQ of the sample is significantly different from 100 (with a = .05) and calculate the effect size, Cohen's d. Report your findings as a sentence that could be in the Results section of an APA-style research article