Based on prior knowledge, the feature "installment_commitment" represents the percentage of disposable income that is allocated towards installment payments. It is likely that higher values of installment_commitment indicate a higher level of commitment to paying installments, while lower values indicate a lower commitment.

To analyze the relationship between the "installment_commitment" feature and the task of determining whether a person receives a credit or not, we can look at typical installment_commitment values for each target class.

Let's generate the dictionary:

```json
{
	"yes": [20.0, 25.0, 30.0, 35.0, 40.0],
	"no": [5.0, 10.0, 15.0, 50.0, 55.0]
}
```

In this dictionary, the "yes" key represents the target class where the person receives a credit, and the "no" key represents the target class where the person does not receive a credit. The values under each key are typical installment_commitment values associated with that target class.