Let be independent nonnegative real-valued random variables with the same probability density function . Answer the following questions with mathematical derivation.
(1) Compute the mean and variance of .
(2) Suppose the value of is given as for some . Compute probability that is less than or equal to for a given index with .
(3) Compute probability by multiplying the probability of (2) by and integrating it with respect to .
(4) Let be the minimum value of set . Compute the probability that is greater than or equal to for a given positive real number .
For given positive real numbers , define random variables as .
(5) Suppose the value of is given as for some . Compute probability that is less than or equal to for a given index with .
(6) Suppose the value of is given as for some . Compute probability that is less than or equal to for all the indices with .
(7) Let be a minimum element in set . Answer the probability distribution of index .