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marta [7]
3 years ago
5

From 12,000 graphing calculators produced by a​ manufacturer, an inspector selects a random sample of 550 calculators and finds

6 defective calculators. Estimate the total number of defective calculators out of the 12,000.
Mathematics
1 answer:
maria [59]3 years ago
3 0

Answer:

131

Step-by-step explanation:

Using proportion,

If Out of 550 calculators = 6 are defective,

Then out of 12000 calculators = ? are defective

\frac{12000 calculators}{550calculators} * 6

= 21.8 * 6

= 130.8 ≈ 131

∴ Approximately 131 calculators are defective

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