Answer Happy

1. (80 pts. Using the data below, develop cumulative percentage distribution for the data and determine (a) average speed, (b) 85th-percentile speed, (c) 15th- percentile speed, and (d) median speed. Speed (mi/h) Car No. Car No. Car No. 23 24 25 26 27 28 29 Speed Car No. (mi/h) 1 35.1 2 44.0 3 45.8 4 44.3 5 36.3 6 54.0 7 42.1 8 50.1 9 51.8 10 50.8 11 38.3 12 44.6 13 45.2 14 41.1 15 55.1 16 50.2 17 54.3 18 45.4 19 55.2 20 45.7 21 54.1 22 54.0 45 46 47 48 49 50 51 52 53 54 55 56 30 31 Speed (mi/h) 46.1 54.2 52.3 57.3 46.8 57.8 36.8 55.8 43.3 55.3 39.0 53.7 40.8 54.5 51.6 51.7 50.3 59.8 40.3 55.1 45.0 48.3 32 Speed (mi/h) 56.0 49.1 49.2 56.4 48.5 45.4 48.6 52.0 49.8 63.4 60.1 48.8 52.1 48.7 61.8 56.6 48.2 62.1 53.3 53.4 47.8 47.1 34.8 52.4 49.1 37.1 65.0 49.5 52.2 48.4 42.8 49.5 48.6 41.2 48.0 58.0 49.0 41.8 48.3 45.9 44.7 49,5 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 33 34 35 57 36 37 38 39 40 41 42 43 44 58 59 60 61 62 63 64 65 66