Question

In a certain computer game, the computer can make 1 of 4 moves, which it chooses randomly. According to the game manual, the probability it will make 1 of the moves is 0.5, the probability it will make 2 of the remaining moves is 0.25, and the probability it will make the last move is unknown, but nonzero. Why can the player immediately know that these probabilities are incorrect?
A.The probabilities are decimals, which can never represent a probability.
B.Two possible outcomes have an identical probability, which is not possible.
C.The sum of all possible moves is greater than 1, which is

Answer 1

or D.The probability of two possible outcomes sums to the probability of another outcome, which is not possible.

Answer 2

as always, the answer is C
the probabilities have to add up to one

Answer 3

thank you!!!!