Question

a bag contains 33 green marbles and 25 blue marbles. you select a marble at random from the bag. find the theoretical probability of selecting a blue marble. thanks

Pr(blue)= number blue/total marbles

Answer 1

First, you would need to add 33+25 because you need to find the total number of marbles that are in the bag.

algebraic expression: 33+25=x

x=58

Next you would need to take the amount of blue marbles and make a fraction over the total amount. The fraction is 25/58. Therefore, the probability of selecting a blue marble is 25/38

Answer 2

First, you would need to add 33+25 because you need to find the total number of marbles that are in the bag.

algebraic expression: 33+25=x

x=58

Next you would need to take the amount of blue marbles and make a fraction over the total amount. The fraction is 25/58. Therefore, the probability of selecting a blue marble is 25/58