Final answer:
The answer is 3) Indeterminate. The confidence level in attribute sampling may be larger or smaller when changed, depending on various factors.
Step-by-step explanation:
When changing the confidence level in attribute sampling, if all other sample size planning factors remain the same, the answer is 3) Indeterminate.
This means that we cannot determine whether the confidence level will be larger or smaller without more information. The confidence level is influenced by multiple factors, including the sample size, margin of error, and variability.