Final answer:
The confession rate for skilled investigators is not documented publicly and varies by situation, although it is expected to be higher for more experienced investigators. Statistical techniques such as increasing sample size and considering the margin of error can improve accuracy in estimating true rates.
Step-by-step explanation:
The percentage of confession rate for most experienced and skilled investigators can vary widely based on numerous factors including interrogation techniques, psychological tactics, and legal parameters. An exact percentage is not publicly documented as it can be influenced by subjective and situational elements.
However, the principles of good investigative work suggest that skilled investigators should have higher confession rates. Evidence-Based Management (EBM), as mentioned with a margin of error (MOE) of 0.02, implies minor changes in the actual value. To lower the sampling error and ascertain the true confession rate, increasing the sample size is suggested.
For example, if a study reported a confidence interval (CI) of (0.18, 0.22) with a maximum error bound of 3 percent, it indicates that the estimated true proportion is expected to lie within this range, stating there is a high confidence in the results based on statistical analysis.