A jar contains 3 red marbles, 5 blue marbles, and 2 green marbles. A student randomly selects one marble.


Which statement best describes the likelihood of drawing a blue marble?
(4 Points)

It is certain that a blue marble will be drawn.

It is unlikely that a blue marble will be drawn.

It is equally likely to draw a blue or red marble.

It is more likely to draw a blue marble than any other color.

1 answer

To determine the likelihood of drawing a blue marble from the jar, we first need to calculate the total number of marbles and the number of blue marbles.

The jar contains:

  • 3 red marbles
  • 5 blue marbles
  • 2 green marbles

Total number of marbles = 3 (red) + 5 (blue) + 2 (green) = 10 marbles.

The probability of drawing a blue marble is the number of blue marbles divided by the total number of marbles:

Probability of blue marble = Number of blue marbles / Total number of marbles = 5 / 10 = 1/2 or 50%.

Now, let's evaluate the provided statements regarding the likelihood of drawing a blue marble:

  1. It is certain that a blue marble will be drawn. (False - there's only a 50% chance.)
  2. It is unlikely that a blue marble will be drawn. (False - a 50% chance is not considered unlikely.)
  3. It is equally likely to draw a blue or red marble. (True - there are 5 blue marbles and 3 red marbles, so while not equal in numbers, the chance of drawing a blue is higher than red, hence this statement is misleading.)
  4. It is more likely to draw a blue marble than any other color. (True - since there are 5 blue marbles compared to 3 red and 2 green, it is indeed more likely to draw a blue marble.)

Based on this analysis, the best statement would be:

It is more likely to draw a blue marble than any other color.