Solution)
Explanation:
From the graph percentage removal of solids at a depth of 2 mts and retention time of 20 min = 48 %
Percentage removal of solids at a depth of 2 mts and retention time of 30 min = 61 %
Percentage removal of solids at depth 2 mts and retention time 25 minutes = (48+61)/2 = 54.5%
Hence Percentage removal of solids with 2 mts depth and retention time of 25 minutes = 54.5%
Tests on a flocculent suspension in a settling column with three sampling points gave the results...
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Week Sales 26 15200 27 15600 28 16400 29 15600 30 14200 31 14400 32 16400 33 15200 34 14400 35 13800 36 15000 37 14100 38 14400 39 14000 40 15600 41 15000 42 14400 43 17800 44 15000 45 15200 46 15800 47 18600 48 15400 49 15500 50 16800 51 18700 52 21400 53 20900 54 18800 55 22400 56 19400 57 20000 58 18100 59 18000 60 19600 61 19000 62 19200 63 18000 64 17600...
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2 62.8 MEAN = 3 71.9 MEDIAN = 4 69.6 MODE= 5 74.1 RANGE = 6 66.6 MIN. = 7 76.5 MAX.= 8 66.4 STDEV. = 9 73.1 MY HEIGHT =67.00 10 71.6 Z SCORE FOR MY HEIGHT = 11 69.3 12 64.0 13 70.9 14 62.2 15 63.3 16 67.7 17 65.2 18 64.2 19 69.4 20 71.7 21 64.6 22 69.0 23 71.3 24 69.1 25 71.6 26 75.9 27 66.2 28 67.4 29 64.6 30 69.6 31...