Question

An urn contains 4 white and 2 red balls. Find the probability distribution and its mean of the number of red balls, if 2 balls are drawn at random

Answer 1

Step-by-step explanation:

1. An urn contains 4 white balls and two red balls
2. total 6 balls thus
3. for 4 balls it's 4/6
4. for 2 balls it's 1/3
5. mean of red ball 1\3
6. same as 4