Since the feature is ALT_BLOOD, which represents the serum ALT content, we can assume that higher values of ALT indicate liver damage or disease. However, it is important to note that ALT levels can vary across individuals and are influenced by various factors such as age, sex, and overall health.

To analyze the relationship between ALT_BLOOD and the presence of chronic heart failure (CHF), we can examine the ALT levels for patients with and without CHF.

Assuming that higher ALT levels indicate liver damage and are associated with a higher risk of CHF, we can expect to see higher ALT levels in patients with CHF compared to those without CHF.

To create the dictionary, we need to determine the appropriate ranges of ALT_BLOOD values for each target class. Let's assume the ranges based on common clinical thresholds:

For the 'no' (without CHF) target class:
- ALT levels may range from 5 to 40 U/L in healthy individuals.
- So, we can consider the following ALT_BLOOD values for 'no': [5.0, 15.0, 25.0, 35.0, 40.0].

For the 'yes' (with CHF) target class:
- ALT levels may be elevated due to liver damage caused by heart failure, but the exact range depends on the severity of the disease and individual variation.
- Let's consider elevated ALT_BLOOD values for 'yes': [40.0, 60.0, 80.0, 100.0, 120.0].

Now, let's create the dictionary with the specified format:

```json
{
	"no": [5.0, 15.0, 25.0, 35.0, 40.0],
	"yes": [40.0, 60.0, 80.0, 100.0, 120.0]
}
```