fundamentals of engineering supplied-reference handbook - Ventech!

152
ENVIRONMENTAL ENGINEERING (continued)
Number of samples required in a one-sided one-sample t-test to achieve a minimum detectable relative difference at confidence
level (1–α) and power of (1–β)
Coefficient of
Variation
(%)
Power
(%)
Confidence
Level
(%)
Minimum Detectable Relative Difference
(%)
5 10 20 30 40
15 95 99 145 39 12 7 5
95 99 26 8 5 3
90 78 21 6 3 3
80 57 15 4 2 2
90 99 120 32 11 6 5
95 79 21 7 4 3
90 60 16 5 3 2
80 41 11 3 2 1
80 99 94 26 9 6 5
95 58 16 5 3 3
90 42 11 4 2 2
80 26 7 2 2 1
25 95 99 397 102 28 14 9
95 272 69 19 9 6
90 216 55 15 7 5
80 155 40 11 5 3
90 99 329 85 24 12 8
95 272 70 19 9 6
90 166 42 12 6 4
80 114 29 8 4 3
80 99 254 66 19 10 7
95 156 41 12 6 4
90 114 30 8 4 3
80 72 19 5 3 2
35 95 99 775 196 42 25 15
95 532 134 35 17 10
90 421 106 28 13 8
80 304 77 20 9 6
90 99 641 163 43 21 13
95 421 107 28 14 8
90 323 82 21 10 6
80 222 56 15 7 4
80 99 495 126 34 17 11
95 305 78 21 10 7
90 222 57 15 7 5
80 140 36 10 5 3