The number X of sick days taken during a year by an employee follows a Poisson distribution

Question:

The number X of sick days taken during a year by an employee follows a Poisson with mean 2. Let us observe four such employees. Assuming independence, compute the probability that their total number of sick days exceeds 10.
Distribution
The word "distribution" has several meanings in the financial world, most of them pertaining to the payment of assets from a fund, account, or individual security to an investor or beneficiary. Retirement account distributions are among the most...