Based on prior knowledge and analysis, we can determine the relationship between the feature L_BLOOD (White blood cell count) and the task of detecting chronic heart failure in myocardial infarction complications data.

Analysis:
- In cases of chronic heart failure, the white blood cell count can be influenced by various factors such as inflammation, infection, or other health conditions.
- It is difficult to determine specific ranges of values for the white blood cell count without additional context or domain-specific knowledge.
- However, typically, a normal range for white blood cell count is between 4,000 and 11,000 white blood cells per microliter.

Based on the analysis, we can now create the dictionary with the requested format:

```json
{
	"no": [5000.0, 6000.0, 5500.0, 6500.0, 7000.0],
	"yes": [9000.0, 10000.0, 9500.0, 8000.0, 8500.0]
}
```

Please note that the values provided in the dictionary are just examples and may not accurately represent the actual relationship between L_BLOOD and chronic heart failure. It is always recommended to consult domain experts or conduct more comprehensive analysis to determine the appropriate ranges and values for a given task.