Thread: Probability

Actually 2 more guys if you don't mind

thanks for yor help
appriepriate it

Hello, Mauro!

Are you really having difficulty reasoning these out?

A box contains 3 marbles: 1 red, 1 green and 1 blue.
Consider an experiment that consists of taking one marble from the box,
replacing it, and then drawing a second marble from the box.

(a) Describe the sample space.

. . .

(b) Describe the sample space when the first marble is not replaced.

. . .