Please provide clearly answer to these question

The space has market value 12.5 M currently got CF=1,250,00 per year. There is a COVID Vaccine distribution to the society on next 5. there is a chance that the vaccine could be provided to elderly 50% which will make the CF increase from today by 10% , there is 30% that vaccine could be provided to elderly and children and CF will be increased by 15% from today , and 20% chance that the vaccine will be provided to everyone and CF will be increased by 40% from today. And if there is 30% chance that no vaccine distribution the CF will remain the same at 1,250,000.

Assumed after 10 years holding period the house can be sold as following price

No Vaccine 10.5 M

Vaccine to elderly 14.0 M

Vaccine to elderly and children 17.5 M

Vaccine to everyone 20.0 M

Questions What is the expected IRR of the home?

What is the standard deviation of IRR?

What is the coefficient of variation? And what's these 3 answer can indicate?