Characteristics of a rockfall. Refer to the Environmental Geology (Vol. 58, 2009) simulation study of how far a block from a collapsing rockwall will bounce down a soil slope, Exercise. Recall that the variable of interest was rebound length (measured in meters) of the falling block. Based on the depth, location, and angle of block-soil impact marks left on the slope from an actual rockfall, the 13 rebound lengths shown in the table (in the next column) were estimated. (These data are saved in the ROCKFALL file.) Consider the following statement: “In all similar rockfalls, half of the rebound lengths will exceed 10 meters.” Is this statement supported by the sample data? Test using α =.10.
10.94 | 13.71 | 7.26 | 17.83 | 11.92 | 11.87 | 5.44 | 13.35 |
4.90 | 5.85 | 5.10 | 6.77 |
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Characteristics of a rock fall. In Environmental Geology (Vol. 58, 2009) computer simulation was employed to estimate how far a block from a collapsing rock wall will bounce—called rebound length —down a soil slope. Based on the depth, location, and angle of block-soil impact marks left on the slope from an actual rockfall, the following 13 rebound lengths (in meters) were estimated. The data are saved in the ROCKFALL file. Compute the mean and median of the rebound lengths and interpret these values.
10.94 | 13.71 | 11.38 | 7.26 | 17.83 | 11.92 | 11.87 | 5.44 | 13.35 | 4.90 | 5.85 | 5.10 | 6.77 |
Based on Paronuzzi, P Rockiall-induced block propagation on a soil slope, northern Italy,” Environmental Geology, Vol. 58,2009 (Table).
EPA Mileage Ratings on 100 Cars
36.3 | 41.0 | 36.9 | 37.1 | 44.9 |
32.7 | 37.3 | 41.2 | 36.6 | 32.9 |
40.5 | 36.5 | 37.6 | 33.9 | 40.2 |
36.2 | 37.9 | 36.0 | 37.9 | 35.9 |
38.5 | 39.0 | 35.5 | 34.8 | 38.6 |
36.3 | 36.8 | 32.5 | 36.4 | 40.5 |
41.0 | 31.8 | 37.3 | 33.1 | 37.0 |
37.0 | 37.2 | 40.7 | 37.4 | 37.1 |
37.1 | 40.3 | 36.7 | 37.0 | 33.9 |
39.9 | 36.9 | 32.9 | 33.8 | 39.8 |
36.8 | 30.0 | 37.2 | 42.1 | 36.7 |
36.5 | 33.2 | 37.4 | 37.5 | 33.6 |
36.4 | 37.7 | 37.7 | 40.0 | 34.2 |
38.2 | 38.3 | 35.7 | 35.6 | 35.1 |
39.4 | 35.3 | 34.4 | 38.8 | 39.7 |
36.6 | 36.1 | 38.2 | 38.4 | 39.3 |
37.6 | 37.0 | 38.7 | 39.0 | 35.8 |
37.8 | 35.9 | 35.6 | 36.7 | 34.5 |
40.1 | 38.0 | 35.2 | 34.8 | 39.5 |
34.0 | 36.8 | 35.0 | 38.1 | 36.9 |
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