The activities required to service a car at the Exclusive Car Mart is summarised in the following table:    Table 1: Activity Times and Predecessors   Minutes Required Activity Description Predecessor  Activity Optimistic a Most Likely m Pessimistic b A B C D E F G H Drain Oil Replace Filter Refill Oil Check Tyres Wash Windows Fill Fluids Service A/c Final Test --- A B, E --- D E C C, F 3 2 3 3 4 4 3 1.5 4.5 3 4.5 4 3 4 3 2 7 5 6 6 7 6 5 3.5   The variability in times required to perform each activity is due to the different types, sizes, and conditions of the cars to be serviced.  Required Draw the activity network for this problem (either AON or AOA) Determine the Expected Time and Variance for each activity. Round to 2 decimal places where applicable. Show the activity schedule (ES, EF, LS, and LF) as well as slack.  Determine and state the critical path for this project. This must be based on your work in c) and not by inspection.                                                                                      What are the expected time and the standard deviation of the project?

The regional transit authority for a major metropolitan area wants to determine whether there is a relationship between the age of a bus and the annual maintenance cost. A sample of ten buses resulted in the following data. Click on the datafile logo to reference the data. DATA file Age of Bus Annual Maintenance (years) Cost ($) 1 350 370 2 480 2 520 2 590 3 550 4 750 4 800 790 5 950

Lyme disease is an inflammatory disease that results in a skin rash and flulike symptoms. It is transmitted through the bite of an infected deer tick. The following data represent the numberF of reported cases of Lyme disease and the number of drowning deaths for a rural county. Complete parts (a) through (c) below. E Click the icon to view the table of Lyme disease and drowning deaths. Click the icon to view the critical values table. ..... (a) Draw a scatter diagram of the data. Choose the correct graph below. D. O A. В. OC. ADrownings 20- ADrownings 20- ALyme Disease 20- ADrownings 20- .-.-- ---- --- 0- 30 30 30 30 Lyme Disease Lyme Disease Drownings Lyme Disease (b) Determine the linear correlation coefficient between Lyme disease and drowning deaths. The linear correlation coefficient between Lyme disease and drowning deaths is r= (Round to three decimal places as needed.) (c) Does a linear relation exist between the number of reported cases of Lyme disease and the number of…

Show the five-number summary for the following data: 5, 14, 17, 9, 8, 13, 16, 11, 6