A Study Was Conducted to Determine If Listening to Heavy

A study was conducted to determine if listening to heavy metal music affects critical thinking. To test the claim, 124 subjects were randomly assigned to two groups. Both groups were administered a basic math skills exam. The first group took the exam while heavy metal music was piped into the exam room, while the second group took the exam in a silent room. The mean exam score for the first group was 81, and the mean exam score for the second group was 87. The researchers concluded that heavy metal music negatively affects critical thinking. Identify (a) the research objective, (b) the sample, (c) the descriptive statistics, and (d) the conclusions made in the study.