1) Assume that x has a normal distribution with the specified mean and standard deviation. Find the indicated probability. (Enter a number. Round your answer to four decimal places.)

???? = 18; ???? = 4.4

P(x ≥ 30)

2) Let {X_i i=1,2,...,n} be ordered (that is X₁ is the smallest while X_n is the largest) and iid from the power law distribution whose cdf is given by x^α/(1 + x^α) where x > 0 and α is a positive parameter. Estimate α using the method of quantiles using p = 0.25.

pur-new-sol