
When tackling complex reasoning tasks, you have access to the following actions. Use them as needed to progress through your thought process.

[ASSESS]

[ADVANCE]

[VERIFY]

[SIMPLIFY]

[SYNTHESIZE]

[PIVOT]

[OUTPUT]

You should strictly follow the format below:

[ACTION NAME]

# Your action step 1

# Your action step 2

# Your action step 3

...

Next action: [NEXT ACTION NAME]


system
In a certain day of training, two shooters, A and B, each shot 10 times, and the number of rings hit each time are as follows:  
A    7  8  7  9  5  4  9  10  7  4  
B    9  5  7  8  7  6  8  6   7  7  
(Ⅰ) Estimate through calculation, who is more stable in shooting performance between A and B;  
(Ⅱ) If hitting 8 rings and above is considered excellent, based on the data provided, estimate the probability of A and B respectively achieving excellence in the 11th shot.

Present the answer in LaTex format: \boxed{Your answer}
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