A box contains 10 balls. One is numbered 1, two are numbered 2, three are numbered 3, two are numbered 4, and two are numbered 5. The balls are mixed and one is selected at random. After a ball is selected, its number is recorded. Then it is replaced. If the experiment is repeated many times, find the variance of the numbers on the balls. (Round off your final answer to 2 decimal places).
Mathbot Says...
I wasn't able to parse your question, but the HE.NET team is hard at work making me smarter.