True or False:

a.If the covariance between two variables is negative, then the correlation between these variables can be either positive or negative.

b.For a uniform continuous variable X defined in the range [0,100], p(X < 10) = p(X 90).

c.Suppose X follows the exponential distribution and is defined on the support S_X. Then = .

d.If we are to count the number of ways that first, second, and third place can be awarded in a basketball tournament we are looking for the number of permutations.

e.Suppose X is a discrete random variable that can take the values 1, 2, 3, 4, 5. Then F(5)=5.