Aprogram is seeded with 30 faults. during testing, 21 faults are detected, 15 of which are seeded faults and 6 of which are indigenous faults. what is the mill's estimate of the number of indigenous faults remaining undetected in the program?

Estimated number of indigenous faults remaining undetected is 6

Explanation:

The maximum likelihood estimate of indigenous faults is given by,

here,

= the number of unseeded faults = 6

= number of seeded faults = 30

= number of seeded faults found = 15

So NF will be calculated as,

And the estimate of faults remaining is   = 12 - 6 = 6

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