Based on prior knowledge, the relationship between ALT_BLOOD and chronic heart failure can be analyzed as follows:

ALT_BLOOD, which represents the Serum AlAT content, is an indicator of liver health. Chronic heart failure can lead to liver dysfunction, which may result in increased serum AlAT levels. Therefore, we can expect to see higher ALT_BLOOD values in patients with chronic heart failure compared to those without.

To generate the requested dictionary, we need to identify five typical ALT_BLOOD values for each target class ('no' and 'yes').

Based on the assumption that higher values indicate chronic heart failure, the dictionary can be formatted as follows:

```json
{
	"no": [20.3, 22.1, 23.8, 19.6, 18.7],
	"yes": [34.7, 38.9, 36.2, 39.1, 37.5]
}
```

Please note that the values provided above are for illustrative purposes only and should not be considered as actual data. Actual values should be determined through analysis or consultation with relevant domain experts.