For Exercise 4.109, see page 220; for 4.110, see page 223; for 4.111 to 4.114, see page 228; for 4.115, see page 230; and for 4.116 to 4.118, see page 235.
4.115 Managing new-product development process.
Exercise 4.113 (page 228) gives the distribution of time to complete two steps in the new-product development process.
4.115
(a) (b)