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WATER COLUMN TOXICITY DATA POWER OF T-TEST TO DETECT A TRUE POPULATION DIFFERENCE (D) FROM MEAN DILUTION WATER SURVIVAL USING... |
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 WATER COLUMN TOXICITY DATA
POWER OF T-TEST TO DETECT A TRUE POPULATION DIFFERENCE (D)
FROM MEAN DILUTION WATER SURVIVAL USING ARCSINE TRANSFORMATION
NO. OF
MEAN
DEGREES
ORGANISMS
DILUTION
OF
MINIMUM
PER
WATER
POOLED FREEDOM,
T VALUE FOR
SIGNIFICANT
REPLICATE
N
SURVIVAL VARIANCE
DF
(1-ALPHA=0.95,DF) DIFFERENCE
20
5
0.98
0.011121
8
1.85955
0.12403
% REDUCTION
ARCSINE
IN SURVIVAL
100 %
100 %
T VALUE
FROM DIL.
ELUTRIATE
ELUTRIATE
FOR
OBS
WATER
SURVIVAL
SURVIVAL
D
(1-BETA,DF)
POWER
1
10
0.88
1.21705
0.26354
2.09166
0.96508
2
20
0.78
1.08259
0.39800
4.10768
0.99830
3
30
0.68
0.96953
0.51106
5.80277
0.99980
4
40
0.58
0.86574
0.61485
7.35888
0.99996
5
50
0.48
0.76539
0.71520
8.86344
0.99999
WATER COLUMN TOXICITY DATA
PROBIT CALCULATION OF LC50
Probit Procedure
Model Information
Data Set
WORK.B
Events Variable
MORT
Trials Variable
M
NO. OF ORGANISMS
PER REPLICATE
Number of Observations
20
Number of Events
161
Number of Trials
400
Name of Distribution
NORMAL
Log Likelihood
-234.4058782
Algorithm converged.
Goodness-of-Fit Tests
Statistic
Value
DF
Pr > ChiSq
Pearson Chi-Square
1.7558
2
0.4157
L.R.
Chi-Square
1.7503
2
0.4168
Response-Covariate Profile
Response Levels
2
Number of Covariate Values
4
Since the chi-square is small (p > 0.1000), fiducial limits will be calculated
using a t value of 1.96.
L46
Appendix L Selected Resource Documents
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