1.Imagine that you have just conducted a study to question the effects of listening to professional recordings to help improve intonation in your music classroom.After hearing samples from several commercial CDs over a few weeks, students have taken a test to assess their ability to recognize correct pitch in a number of songs.Now that you have all of their scores, you need to compute the data to see if their pitch ability has improved, remained the same, or not improved to any level of significance. First, read the handout on Descriptive Statistics to refresh your understanding of statistical concepts.Then, using the following scores below (on a 100-pt. scale), replace the numbers in your Stats Calculator and run the calculations.

From there, write a brief report analyzing what the data says on how your treatment affected the students' learning of pitch in your classroom. In your narrative analysis, use the average and standard deviation in describing their performance on the pre-test and post-test.Further consider how listening to these commercials CDs impacted their performance during the study. Use the handouts titled "DescriptiveStatistics.pdf" and "DescriptiveStatisticsCalculator.xls" files to explain and compute these analyses.

A = 70, 63, 66, 65, 77, 84, 64, 68, 80, 83, 70, 79, 59, 56, 70, 77, 72, 81, 65, 63[PRE-TEST]

B = 78, 89, 79, 85, 83, 78, 90, 88, 93, 86, 89, 92, 96, 89, 87, 89, 86, 91, 89, 83[POST-TEST]