Question

A bag has 5 yellow marbles, 3 red marbles, and 2 blue marbles. Quinn randomly picks a marble from the bag and returns it before another is picked. How many times would Quinn expect to pick a blue marble if he picks a marble 200 times? O A 20 B. 40 C 50 O D. 60 O E 100​

Answer 1

Answer⇒⇒⇒40 blue marbles

Explanation:

First find the probability of a blue marble

P (blue) = number of blue marbles / total marbles

= 2 blue/ ( 5+3+2) total

= 2/10

=1/5

We can use this since we return the marble to the bag each time

We multiply this by 200 for the number of times it is picked

200 * 1/5 = 40

We should expect to pick 40 blue marbles