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.

Question 4.115

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.

  1. Calculate the variance and the standard deviation of the number of weeks to complete the development of product specifications.
  2. Calculate and for the design of the manufacturing-process step.

4.115

(a) (b)