1) Problem -9.19 (p. 426) - 11'th Ed. (uses network only from problem 9.6; use activity times a, m, and b from problem 9.19). Draw network, tabulate results, and show calculations - as shown in class. Determine the following: a. Expected activity times b. Earliest start and finish times c. Latest start and finish times d. Activity slack e. Critical path f. Expected project duration and standard deviation