Question

A bag contains 4 blue and 6 green marbles. Two marbles are selected at random from the bag. If the first marble is replaced before the second marble is drawn, what is P(blue second | green first)?

A. 210
B. 410
C. 510
D. 610

Answer 1

Answer:

4/10

Step-by-step explanation:

4 blue and 6 green marbles. = 10 marbles

We draw a second marble

P(blue ) = blue marbles / total marbles = 4/10

The first is an independent even since the marble is replaced

P( blue second given a green first) = 4/10

Answer 2

Answer:

4/10

Step-by-step explanation: