Answer:
Third table.
Step-by-step explanation:
<em>A probabilities is the quotient of the number of favourable outcomes and the total number of possible outcomes</em>. From its definition, we can deduct that the numbers are always positive, and the denominator is always major than the numerator. So,<em> every probability is restricted from 0 to 1</em>, that the range of probabilities results, otherwise, if the number is negative or more than 1, that's not a probabilities.
So, <u>the first and fourth are not a probability distribution because they have negative "probabilities"</u>. <u>The second table is not a probability distribution </u>either, because <u>the sum of all is more than 1</u>, which is not possible.
Therefore, the right answer is third table because:
0.6 + 0.05 + 0.05 + 0.3 = 1; and all numbers are positive.
