To analyze the relationship between the feature BMI and the task of determining whether a person has diabetes or not, I will consider the general knowledge about BMI ranges associated with different health conditions. 

Typically, a BMI below 18.5 is considered underweight, 18.5 to 24.9 is considered normal weight, 25 to 29.9 is considered overweight, and 30 or above is considered obese. However, the specific ranges of BMI that are associated with diabetes may vary depending on other factors such as age, ethnicity, and gender. 

With that in mind, let's generate the dictionary with typical BMI values for each target class:

```json
{
	"yes": [25.7, 31.5, 35.2, 38.9, 41.7],
	"no": [22.1, 24.3, 26.8, 29.6, 33.0]
}
```

Please note that these are just example values and the actual ranges of BMI associated with diabetes may differ based on the specific dataset and population being analyzed.