x is uniformly distributed over a range of values from 8 to 21(use two decimal places for a) and b)

/in /by

x is uniformly distributed over a range of values from 8 to 21(use two decimal places for a) and b) and four decimal places for c) to e))

a What is the value off(x) for this distribution?

b For this distribution determine: the mean; and standard deviation

c Probability of (10 ?x

d Probability of (x

e Probability of (x ? 7) = ?