second chapter
linear combination of random variables
Three discs are drawn at random from a box containing a number of red and blue discs.
the mean and variance of the number of blue discs drawn are 2 and 0.5 respectively.what are the mean and variance of the red discs drawn?
linear combination of random variables
Three discs are drawn at random from a box containing a number of red and blue discs.
the mean and variance of the number of blue discs drawn are 2 and 0.5 respectively.what are the mean and variance of the red discs drawn?