Marley drives to work every day and passes two independently operated traffic lights. The probability that both lights are red i
s 0.35. The probability that the first light is red is 0.48. What is the probability that the second light is red, given that the first light is red? a)0.13
b)0.35
c)0.48
d)0.73
Overall probability = Probability1 *Probability2 Using the data you already have, you can fill it in as 0.35 = 0.48 * P2 Rearrange to isolate P2, by dividing both sides by 0.48, so 0.35/0.48 = P2 P2 = 0.7291666..., which rounded to two d.p is 0.73 So d)0.73 is correct