Question

Q3)

Box1: 6 green balls, 0 red balls, 3 blue balls

Box2: 2 green balls, 2 red balls, 7 blue balls

Experiment: Select one of the two boxes with uniform random probability, and draw two balls from the selected box. Record the box number as the r.v. i, and the colors of the two balls as b₁, b₂.

Compute P(b₁ = red, b₂ = blue| i=1 )

[Round to 3 digits after decimal point]

Your Answer:

Answer 1

probability of selecting anyone box=1/2

P(i=1)=0.5

0 since in the box1 there is no red ball.  

so answer is 0.