Research Article

A Simple Normal Approximation for Weibull Distribution with Application to Estimation of Upper Prediction Limit

Table 3

Percentage simulated coverage probabilities of 95% UPL that contain at least l of future observations at each of r locations from Weibull distribution for sample sizes , 10, 20 using GV, CNPT, and BCKL methods*.

GVCNPTBCKLGVCNPTBCKLGVCNPTBCKL

,
,
0.10.594.8996.1094.7295.0496.3994.9594.8995.9194.80
195.0196.2394.8794.9596.0394.5394.9095.7995.14
394.9295.7796.0495.1295.0594.6894.9595.9294.71
10.595.0096.0994.7595.0796.4394.9494.9595.6194.47
194.9796.0194.5795.0996.3394.8294.9395.5594.94
394.8696.6694.4495.0195.7194.4194.8795.3895.37
50.594.9496.3694.8894.9295.7394.5395.0295.4294.60
194.9496.1394.7995.0096.4194.9194.8695.6394.61
395.0197.0194.6994.9695.5894.6894.8695.2394.57
500.594.8696.7695.7694.9195.6195.0295.0795.8494.88
195.0196.0995.2494.9495.6494.4994.8695.4495.43
394.9396.4695.7195.0895.7694.8394.7796.1796.05
1000.595.0495.9695.3094.9594.7594.8195.0696.6995.06
194.9696.3295.9795.0395.0694.4495.0396.4595.54
395.0996.8396.4695.0595.0794.9994.8797.0395.38

,
,
0.10.595.0896.1494.6894.8996.3994.9095.0995.7694.92
194.9995.9194.4894.8797.1295.6094.9294.9194.58
394.9295.2994.4494.9094.9894.8794.8995.7295.62
10.594.9296.5295.0894.9896.3194.7994.9795.8594.48
195.0196.0294.6595.1596.9295.4095.0395.9194.76
395.0395.2494.4795.0994.6394.5294.9396.6095.99
50.594.9896.3494.8894.9596.3594.8894.9995.8494.57
195.1496.4095.0094.9696.3794.8395.1095.5594.42
395.0394.4794.5295.0695.3794.9194.9595.5894.61
500.595.0296.1394.5294.9695.1995.1094.9695.9794.78
194.9995.2294.6194.9495.5294.7095.1095.4794.61
395.1095.3194.5094.9595.2794.6895.1695.1394.58
1000.595.0995.2394.7294.8695.5694.5595.1395.5594.45
194.9895.1794.6894.9294.9094.6495.1595.8494.60
395.0495.4194.7395.0495.7795.0594.9395.9994.46

,
,
0.10.594.9595.7394.5195.1896.3494.9795.0795.9994.73
194.9295.4194.1995.0196.3195.0595.1895.7694.72
395.0395.5194.2195.1396.4694.8595.0195.6694.53
10.594.9095.3694.1695.0496.0094.6895.2095.8994.54
194.9495.6694.4995.1696.1194.6495.0995.5394.61
394.9395.6894.8695.0795.8794.4195.0895.1894.64
50.595.0295.5794.2995.1895.6494.4295.0295.2394.55
194.9695.0194.9595.0595.9994.7595.0995.4694.66
394.8494.7194.0695.0195.2194.1495.1895.4994.59
500.595.0095.1194.3094.9495.6894.8295.1395.5294.68
194.9795.9194.5094.8595.8694.5595.1395.0794.54
394.8695.8694.8195.1995.7895.2595.1395.6294.64
1000.594.8995.5394.6094.9795.4194.6995.0995.2794.50
194.9595.4394.3795.0295.5794.5295.0595.8494.47
395.0695.9394.4195.0995.6294.8595.1295.9394.60

*Results are obtained assuming unknown scale and shape parameters