Determines the acceptability of a lot through
sampling by variables according to the standard ANSI/ASQC Z1.9-1980.
Both k and M values are those in the
standard (not calculated from the risks here). As to the
"estimation of the lot percent nonconforming"
(pL, pU,
pT), it is calculated (not by consultation of
the table in the standard), small differences from the
manual procedure being thus possible. (For too small quality
indices, which lead to an inacceptable argument for the Beta function,
the estimates are made 100 %.) |
|
References:
• Anonymous, 1980, ANSI/ASQC Z1.9-1980,
American Society for Quality Control, Milwaukee, WI (USA).
• Resnikoff, G. J.,
G. J. Lieberman, 1957, "Tables of the
non-central t distribution: density function, cumulative distribution
function and percentage points", Stanford University Press, Stanford,
CA (USA). |
