computes the average total inspection for a double-sampling plan.
ATI2()
where
N |
is the lot size, where . |
|
is the acceptance number for the first sample, where . |
|
is the rejection number for the first sample, where . |
|
is the acceptance number for the second sample, where . |
|
is the size of the first sample, where and . |
|
is the size of the second sample, where and . |
p |
is the proportion of nonconforming items produced by the process, where 0 < p < 1. |
The ATI2 function returns the average total inspection for a Type B double-sampling plan. For details on Type B double-sampling plans, see Types of Sampling Plans.
The average total inspection is
where
and