Based on my prior knowledge, let's analyze the relationship between the feature "num_dependents" and the target variable "Does this person receive a credit?". 

In general, individuals with a higher number of dependents may have higher financial responsibilities, which could impact their ability to receive a credit. Therefore, it is reasonable to assume that there may be a negative relationship between the number of dependents and the likelihood of receiving a credit.

To create the dictionary with specific details, we will include 5 typical num_dependents values for each target class ('yes' and 'no'). 

```json
{
  "yes": [0.0, 0.0, 1.0, 1.0, 2.0], 
  "no": [0.0, 1.0, 1.0, 2.0, 3.0]
}
```