Final answer:
Events A and B are dependent, but the missing probability cannot be calculated without more information.
Step-by-step explanation:
Events A and B are dependent. In order to find P(A), we need more information. The missing probability can only be determined using the conditional probability formula: P(A|B) = P(A and B) / P(B). However, since the value of P(A and B) is not given, we cannot calculate the missing probability. Therefore, the correct answer is N/A (not applicable).