I'm familiar with how to answer a question about independent events when it asks for "at least one" event occurring, but this one has me stumped, I've looked online everywhere:
Cars coming to a dead end intersection can turn either left or right. Suppose that successive cars choose a turning direction independently of one another and that P(left turn)=0.7. Among the next 3 cars, what is the probability that at least 2 turn left?
I'm not sure where to start (sample spaces?) or where I can use the given probability value (Independent events formula?)
Any help would be appreciated. Thanks in advance.