Standard deviation of the sampling distribution of fractions

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Reference no: EM131232404

Using samples of 191 credit card statements, an auditor found the following:

Sample 1 2 3 4

Number with errors 5 1 5 9

1. Determine the fraction defective in sample 4.

A) 0.026

B) 0.005

C) 0.047

D) None of the above

2. If the true fraction defective for this process is unknown, what is your estimate of it?

A) 2.6%

B) 0.5%

C) 4.7%

D) 3.1%

E) 5.2%

3. What is your estimate of the standard deviation of the sampling distribution of fractions defective for samples of this size?

A) 0.0213

B) 0.0115

C) 0.002

D) 0.0303

Reference no: EM131232404

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