Kelle Carpet and Trim instals carpet in commerciat offices. Poter Kelie has been very concemed with the amourt of bine t tock to complete severaf recert jota. Seme of has aokan are vary unvelable. A list of activities and their optimistic completion time, the most fatly completion thes, and the pessimiste completion tirse (at in dayp) for a new contract are geven in the folowing table. This exereise contains only part a. a) Based on the activity time estimates, the expected times and variance for each of the activites are: (Round your responses to two decimal places.)