Three boxes contain red and green balls. box 1 has 5 red balls* and 5 green balls*, box 2 has 7 red balls* and 3 green balls* and box 3 contains 6 red balls* and 4 green balls*. the respective probabilities of choosing a box are 1/4, 1/2, 1/4. what is the probability that the ball chosen is green?

0.375

Step-by-step explanation:

Let G be the event that the chosen marble is green. Let be the event that we choose Box i.

The probabilities of choosing a box are :

Now,

By using the law of total probability, we have

so far i think you have the right thing going for you just remember soh cah toh

step-by-step explanation:

sine over hypotenuse

cosine   equals adjacent

tangent over hypotenuse