Question 19 The following questions will be based on this box-and-whisker plot. (The graph will be included in each of the questions so that you won't have to go back to this question.) 110 100 90 70 60 50 30 The upper and lower boundaries of the middle box are about 95 and 85. What statistic or calculation determines these values? Answer in 1-2 words or a phrase. Question 20 110 100 90 80 70 60 20 What is the mean, according to this graph (approximately)? Answer with a number. Question 21 110 100 90 80 70 60 50 30 8 What is the median, according to this graph (approximately)? Answer with a number, Question 23 110 100 90 80 70 60 50 40 20 Does this show a symmetrical distribution, positive skew, or negative skew? Type one, and the briefly explain how you can tell at le For the toolbar, press ALT+F10 (PC) or ALT+FN+F10 (Mac). BIUS Paragraph Arial 10pt EVEVAV