This question: 2 point(s) possible Submit test A student study of the effects of caffeine asked volunteers to take a memory test 2 hours after drinking soda. Some drank caffeine-free, some drank regular, and others drank a mixture of the two (getting a half-dose of caffeine). The 5-number summaries for each group's scores (number of items recalled correctly) on the memory test are shown below. Complete parts a through d. No Caffeine Low Caffeine High Caffeine 1555 Min 16 15 13 Q1 17 18 15 b) Name the variables and classify each as categorical or quantitative. The two variables are the type of drink and the test score Median 21 22 18 228 which are categorical and quantitative variables respectively. Q3 23 23 22 c) Create side-by-side boxplots to display these results as best you can with this information. Create side-by-side boxplots, where N represents the group with no caffeine, L the group with low caffeine, and H the group with high caffeine. Choose the correct graph below. A. OB. C. OD. Scores CH HDH HO 10- G N L H Scores 30- HDX HDHO KTH 10- 5 G N H d) Write a few sentences comparing the performances of the three groups. Scores HOH Hooo H G N L H The participants scored about the same with The medians for these two groups were generally scored lower than the other two groups on all measures of the 5-number summary. Scores HDH HOH Z N HIHI Q Max 27 27 23 with slightly more variation in The