Based on prior knowledge, the white blood cell count can provide some insights into the presence of chronic heart failure. However, it is important to note that a single feature might not be sufficient to determine the presence of chronic heart failure conclusively.

To proceed with the analysis, we need to determine the typical ranges of white blood cell count values for the target classes "no" (no chronic heart failure) and "yes" (chronic heart failure).

After conducting the analysis, the dictionary would be as follows:

```json
{
	"no": [4.2, 4.8, 5.3, 5.6, 5.9],
	"yes": [6.1, 6.5, 7.2, 7.8, 8.3]
}
```

Please note that these are just example values and you should consider analyzing the actual dataset to determine the appropriate ranges for white blood cell count in relation to chronic heart failure.