A six-face fair dice is rolled a large number of times. The mean value of the outcomes is _________.

The area (in percentage) under standard normal distribution curve of variable $$Z$$ within limits from $$-3$$ to $$+3$$ is ________.

Consider a Poisson distribution for the tossing of a biased coin. The mean for this distribution is $$\mu $$.

The standard deviation for this distribution is given by

If $$P(X)$$ $$ = $$ $$1/4,$$ $$P(Y) = 1/3,$$ and $$\,\,P\left( {X \cap Y} \right) = 1/12,\,\,$$ the value of $$P(Y/X)$$ is