An investment firm offers its customers municipal bonds that mature after varying numbers of years. Given that the cumulative distribution function of T, the number of years to maturity for a randomly selected bond, is given by F(t), find (a)

P(T=5); (b) P(T>2); (c) P(5.4

0, t < 2,

5/8, 2 less than or equal to t < 5

3/4, 5 less than or equal to t < 8

7/8, 8 less than or equal to t < 10

1, t greater than or equal to 10

find a, b, c, d from above info.