Question

A bag contains 4 yellow, 2 red, and 6 green marbles. Two marbles are drawn. The first is replaced before the second is drawn. A random variable assigns the number of red marbles to each outcome. Calculate the expected value of the random variable

Answer 1

P(red) = 2/(4+2+6) = ?

If the events are independent, the probability of both/all events occurring is determined by multiplying the probabilities of the individual events.

P(red) * P(red) = ?

Answer 2

0.67