Return to Exercise 6-3. Answer each of the following as well as possible from the results in Table 6.8.

(a) What is the marginal cost per professional-

equivalent hour of programming associated with the optimal solution in Table 6.8?

(b) How much would cost increase if 1050 professional-equivalent hours of programming are required? How about 1100?

(c) Does Professor Proof’s availability limit the optimal solution? How much would cost change if Professor Proof could devote only 150 hours to supervision? How about 100 hours?

(d) How much would the hourly rate of graduate student programmers have to be reduced before Professor Proof might optimally hire some?

(e) How much would project cost increase if professional programmers cost $30 per hour? If they cost $35?

(f) Suppose that Professor Proof decides to require at least half of the total programmer hours to go to students. Could this requirement change the optimal solution?

(g) Suppose that Professor Proof decides to allow unlimited hours of graduate student programming. Could this revision change the optimal solution?

(h) One of Professor Proof’s colleagues has expressed interest in doing some of the programming to earn outside income. At what price per hour should Proof be interested if he estimates that the colleague would be 80% as efficient as a professional and require 0.10 hour of supervision per hour of work?