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gregori [183]
3 years ago
12

A manufacturer of computer disks has a historical defective rate of .001. what is the probability that in a batch oof 1000 disks

, 2 would be defective?
Mathematics
2 answers:
kkurt [141]3 years ago
7 0

p(2 defective) = 1000C2*(.001²)*(.999⁹⁹⁸)

.. ≈ 499,500*10⁻⁶*0.368432

.. ≈ 0.18403


About 18.4%.

Aleonysh [2.5K]3 years ago
6 0
P(2 defective) = 1000C2*(.001²)*(.999⁹⁹⁸)
.. ≈ 499,500*10⁻⁶*0.368432
.. ≈ 0.18403

About 18.4%.
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