Determine the required value of the missing probability to make the distribution a discrete probability distribution. x

Question:

Determine the required value of the missing probability to make the a discrete probability .... P(x)
0 .... 0.30
1 .... 0.15
2 .... ?
3 .... 0.20
4 .... 0.15
5 .... 0.05
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...