a) By using judgement
Column | Planned Audit | Initial Sample | |||
ARACR | TER | EPER | Population Size | ||
1 | 10 | 6 | 2 | 1000 | 90 |
2 | 5 | 6 | 2 | 100000 | 120 |
3 | 5 | 5 | 2 | 6000 | 150 |
4 | 5 | 6 | 2 | 1000 | 100 |
5 | 10 | 20 | 8 | 500 | 45 |
6 | 10 | 20 | 2 | 500 | 30 |
7 | 5 | 2 | 0 | 1000000 | 200 |
b. By using attributes sampling from the appropriate part of table 14-8
Column | Planned Audit | Initial Sample | |||
ARACR | TER | EPER | Population Size | ||
1 | 10 | 6 | 2 | 1000 | 132 |
2 | 5 | 6 | 2 | 100000 | 127 |
3 | 5 | 5 | 2 | 6000 | 181 |
4 | 5 | 6 | 2 | 1000 | 127 |
5 | 10 | 20 | 8 | 500 | 25 |
6 | 10 | 20 | 2 | 500 | 18 |
7 | 5 | 2 | 0 | 1000000 | 149 |
c. 1. Increase in ARACR = Sample Decrease
2. Increase in TER = Sample Decrease
3. Increase in EPER = Sample Increase
4. Incrase in population size = Sample Increase
d. because there are differences in ARACR and TER percentage and also there is a huge differences in population size.
e. ARACR and TER have the greatest effect on the initial sample size and population size has the least effect on the
initial sample size.
f. The initial sample size is called that because the exceptions in the actual sample must be evaluated before it possible
to know whether the sample is sufficiently large to achieve the objectives of the tests.