Based on prior knowledge, the relationship between serum cholesterol levels and the presence of heart disease is well established. Higher levels of serum cholesterol have been associated with an increased risk of heart disease. To determine the appropriate ranges of values, we can refer to normal ranges for cholesterol levels.

For this analysis, let's assume the following normal ranges for serum cholesterol:
- Values below 200 mg/dl are considered normal.
- Values between 200 and 239 mg/dl are considered borderline high.
- Values above 240 mg/dl are considered high.

From these ranges, we can derive a dictionary with typical values for each target class:

```json
{
	"no": [160.5, 180.2, 190.6, 195.3, 200.7],
	"yes": [245.1, 260.8, 275.2, 280.6, 290.9]
}
```

Please note that these values are just for demonstration purposes and should not be used as actual reference values for diagnosing heart disease. Actual diagnosis should be done by medical professionals using appropriate tests and reference ranges.