How is the expected completion time of a project activity, and of a PERT project,
computed?
Julie’s Diamond Boutique is very concerned with its order policies related to one-carat
diamond solitaires. Their current policy is to order 10 diamonds whenever their
inventory reaches 6 diamonds (unless there is already an ordered delivery due).
Currently there are 8 diamonds on hand. Orders are placed at the end of the month and
take one month to arrive (e.g., if an order is placed at the end of month 1, it will be
available at the beginning of month 3). The following distribution of monthly sales has
been developed using historical sales. If Julie’s does not have a diamond on hand, it will
result in a lost sale. Use the following random numbers to determine the number of lost
sales of one-carat solitaires at Julie’s over 12 months.
Random numbers for sales: 10, 24, 03, 32, 23, 59, 95, 34, 34, 51, 08, 48