(9) Stem and Leaf plot A random sample of twenty test scores is listed below. 87 76 98 77 90 95 88 85 66 89 79 93 50 96 84 85 82 52 51 69 (a) Construct a stem-and-leaf plot for the data (b) Find the Mean, Median, and Standard Deviation (c) Find the z-score for the individual student with score 84 (d) Interpret the z-score (write the fully complete sentence on your paper): "The individual test score of 84 is standard deviations the class mean." Press Next for exam problem (10) Press Previous to go back to (8)