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andrew11 [14]
3 years ago
7

In a bolt-manufacturing factory, it is estimated that 6% of the bolts being manufactured will be defective, with a 3% margin of

error. Choose the statement that correctly describes the confidence interval.
A. The percentage of defective bolts is 6% or more.
B. The percentage of defective bolts is 6% or less.
C. The percentage of defective bolts is between 3% and 6%.
D. The percentage of defective bolts is between 3% and 9%.
Mathematics
1 answer:
Lynna [10]3 years ago
8 0

Answer:

D

Step-by-step explanation:

A margin of error provides information on the  percentage points ones results will differ from the real value.

If margin of error is 3% and estimated value is 6%, it means that the confidence interval would be within ±3 of the estimated value.

So, the confidence interval would be between 3% (6% - 3%) and 9% (6% + 3%)

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