Coleman Rich Control Devices, Inc., produces custom-buit relay devices for auto makers. The most recent project undertaken by Rich requires 14 different activities. Rich's managers would like to determine the totat project completion time (in days) and those activities that lie along the oritical path. The appropriate data are shown in the following table: a) The expected completion time of the project = days (round your responte to two decimal places). The activities that represent the project's critical path are b) if the time to complete the activities on the critical path is normally distributed, then the probability that the critical path will be finished in 54 days or less = (round your response to two decimal places) c) The number of days that would result in 90% probability of completion is = days (round your response to two decimal places)