Each of the following tables lists certain values of x and their probabilities. Determine whether or not

Question:

Each of the following tables lists certain values of x and their probabilities. Determine whether or not each one satisfies the two conditions required for a valid probability and explain why.
a.
x P(x)
5.... –.36
6.... .48
7.... .62
8.... .26
b.
x P(x)
1.... .27
2.... .24
3.... .49
c.
x P(x)
0.... .15
1.... .08
2.... .20
3.... .50
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...