What is the first quartile of X having the following probability density function? $f(t) = \frac{1}{4\sqrt{2\pi}} e^{-\frac{(t-10)^2}{32}}$ for $-\infty < X < \infty$

If $p$ is increased for a fixed $n$; the Binomial distribution shifts to the

The variance of a binomial distribution with parameters $n$ and $p$ is:

An example of a bi-parametric discrete probability distribution is

Probability distribution may be

The mean of the Binomial distribution $B(4, 1/3)$ is equal to

The probability that a student is not a swimmer is $1/5$ then the probability that out of five students four are swimmer is