Question

Each group of students receives a bag that has 8 red cubes,2 green cubes , and 10 blue cubes , if a group makes 100 pulls and replaces the cube after each pull, how many times would you expect them to draw a green cube

Answer 1

We can expect them to draw a green cube 10 times.

Given:

A Bag has 8 red cubes,2 green cubes, and 10 blue cubes.

To Find:

The total number of times green cubes were taken from 100 pulls with replacement.

Solution:

The total number of cubes in a Bag =No. of red cubes+ No. of green cubes+ No. of blue cubes

=8+2+10

= 20

Probability of getting a green cube when placing it back in the bag

= No. of Green cubes / Total no. of cubes

= 2/20

= 1/10

The total number of times green cubes were taken from 100 pulls with replacement

= probability of getting a green cube * total no. of pulls

= 1/10 * 100

= 10

∴ We can expect them to draw a green cube 10 times.

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