Answer:
we assume that the balls are drawn with replacement since it not stated,now we know that ;
probability=required outcome/possible outcome.
we define possible outcome as the total number of events;in particular we say 4red balls + 9 blue balls=13 balls
now, red balls=4 and blue balls=9, since we want to find the probability of drawing a red ball we say;
probability=[tex]\frac{4}{13}=0.307[/tex]
Step-by-step explanation:
probability: this is the likelihood of an even happening or occurring.