Julia and Elena have run the following histograms from their data. They expect that the concepts of exam scores and number of alcoholic drinks per week are connected. The graph has exam score on the x-axis and frequency on the y-axis. It is approximately normally distributed maybe (slightly leptokurtic).. The frequency histogram has number of drinks on the y-axis. The scores are noticeably positively skewed. Which inferential test should they use to test their hypothesis? Question 26 options: a) Point-biserial correlation b) Pearson correlation c) Spearman correlation d) Independent samples t-test