Question

The probability of pulling a blue marble from a bag is 0.25.

Which bags of marbles are good models for this probability?
Select two that apply.
✓5 yellow, 9 red, 3 blue
6 yellow, 5 red, 10 blue, 12 green, 7 purple
10 yellow, 3 red, 10 blue
O 1 yellow, 2 red, 3 blue, 5 green, 1 purple

Answer 1

option 2 and 4

Explanation:

add up all the values given then divide the number of blue given.

Answer 2

The second and fourth choices.

Explanation:

Probability of getting a blue marble = 0.25 = 1/4.

Therefore the number of blue bags will be 1/4 of the total of marbles.

The second choice has 10 blue marbles out of a total of 40, so this is one.

The 4th bag has 12 marbles of which 3 are blue. 3/12 = 1/4 so this is another answer which is correct.