Numerical Test Question 43 – Estimated faulty equipment
Scenario
A procurement team checked a random sample of 480 devices from a delivery and found 18 with a fault. The full delivery contains 12,800 devices.
| Devices checked | Devices with a fault | Total devices |
|---|---|---|
| 480 | 18 | 12,800 |
Question
If the sample fault rate applies to the full delivery, approximately how many devices would have a fault?
- A. 360
- B. 420
- C. 520
- D. 480
Click to reveal the answer
Correct answer: D. 480
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