a) \(\bar{u} = \frac{\sum_{i=1}^N \frac{2x_i}{n_i}}{N}\)
b) \(\bar{u} = \frac{\sum_{i=1}^N \frac{x_i}{2n_i}}{2N}\)
c) \(\bar{u} = \frac{\sum_{i=1}^N \frac{x_i}{n_i}}{N}\)
d) \(\bar{u} = \frac{\sum_{i=1}^N \frac{x_i}{n_i}}{2N}\)
If xi=total number of nonconformities in a sample of ni inspection units, and there are N samples of different sample si
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If xi=total number of nonconformities in a sample of ni inspection units, and there are N samples of different sample si
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