Of course cp can be near the nominal level even though some very poor coverages exist. Consequently, we also introduce
two score functions defined, for a nominal coverage 1α, by
s1 p1; p2; α; m 1⁄4
8
0; cpðp1; p2Þrm
>>>>>><
101⁄2cpðp1; p2Þm
1αm ; cpðp1; p2ÞAðm; 1α
" #; cpðp1; p2ÞAð1α; 1
10 1f1αcpðp1; p2Þg2
>>>>>>:
α2