b. Calculate the variance, 2, for each activity. (Enter your responses rounded to two decimal places.) Jordanne King, the project manager for Webjets International, Inc., compled a table showing time estimates for each of the activities of a pr the company's Web page, including optimistio, most likely, and pessimistic. a. Calculate the expected time, t, for each acivity. (Enter your responses rounded to two decimal places.) b. Calculate the variance, a2, for each activity. (Enter your responses rounded to two docimal places.)