Question

Using samples of 200 credit card statements, an auditor found the following: Use Table-A. Sample Number with errors 1 4 2 1 3c. What is your estimate of the mean and standard deviation of the sampling distribution of fractions defective for samples og. Suppose that the long-term fraction defective of the process is known to be 2 percent. What are the values of the mean and

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Answer #1

Answer a:- Fraction derivative=

Sample

1

2

3

4

Numbers with errors

4

1

6

12

Fraction Derivatives

4/23=0.17

1/23=0.0435

6/23=0.26

12/23=0.52

Answer b:- (17+4.35+26+52)/4=99.35/4=24.84%

Answer c:- Mean = 0.2484

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