I would grade this answer a 3.0 out of 10.0 for the following reasons:

1. **Incorrect Representation**: The temporal profile is not correctly formatted as per the requirements. The example provided uses days and hours as units without properly converting them to a consistent unit like seconds. Furthermore, there's no standard deviation provided in the profile, which is necessary for calculating deviations as described in the prompt.

2. **Incorrect Syntax**: In the dictionary, there is a syntax error in the key ('Initiate Purchase Order', 'Receive PO Approval") where the quotation mark is mismatched.

3. **Incomplete Information**: The answer lacks standard deviation values for each pair, which are essential to define the temporal profile properly. Each entry in the temporal profile should be a tuple containing both the average time and the standard deviation.

4. **Explanatory Text**: While the descriptive text provides some context about the P2P process and standard deviation, it does not directly address the format and calculation specifics that were required by the question.

5. **Ambiguity in Values**: The times provided as "2 days, 12 hours" and similar formats are not precise in terms of coding and computationally impractical directly. The values should have been in seconds, as shown in the well-defined example given in the question (like 86400 seconds for 1 day).

A more accurate representation in line with the given example would be something like this:

```python
temporal_profile = {
    ('Initiate Purchase Order', 'Receive PO Approval'): (216000, 43200),  # Converted 2 days and 12 hours to seconds (2*86400 + 12*3600)
    ('Receive PO Approval', 'Purchase Order Issued'): (115200, 28800),   # 1 day and 8 hours to seconds (86400 + 8*3600)
    ('Issue Purchase Order', 'Receive Item Delivery'): (1658880, 345600), # 2 weeks and 4 days to seconds (2*7*86400 + 4*86400)
    ('Receive Item Delivery', 'Inspect Items'): (86400, 28800),         # 1 day to seconds and a hypothetical standard deviation
    ('Inspect Items', 'Create Receipt'): (259200, 28800),               # 3 days to seconds and a hypothetical standard deviation
    ('Create Receipt', 'Process Invoice'): (86400, 28800),              # 1 day to seconds and a hypothetical standard deviation
    ('Process Invoice', 'AP Team Review'): (172800, 28800),             # 2 days to seconds and a hypothetical standard deviation
    ('AP Team Review', 'AP Team Approves Payment'): (86400, 28800),     # 1 day to seconds and a hypothetical standard deviation
    ('AP Team Approves Payment', 'Payment Sent'): (172800, 28800)       # 2 days to seconds and a hypothetical standard deviation
}
```
This would provide a better grade, likely around 9.0 or 10.0 if fully accurate, because it meets the requirements and corrects the provided issues.